Green or Gold: How a CAC Sticker Can Transform the Market Value of Your German States 2/3 Thaler

Let me tell you something I’ve learned after years of watching this market: a tiny green or gold sticker can completely transform what a coin is worth — not just in dollars, but in how fast it sells and who competes to own it. Today, I want to break down exactly how the CAC sticker premium plays out for one of my favorite undervalued issues: the 1705 (and related 1701–1705) 2/3 Thaler from Brunswick-Lüneburg-Celle, catalogued as KM#17 (also referenced as Welter 2153).

I’ve spent a long time studying how third-party verification reshapes the numismatic marketplace. The Certified Acceptance Corporation — CAC — has quietly become one of the most powerful forces in modern coin trading. Nowhere is their influence more visible than in segments where quality varies wildly within a single assigned grade. This Brunswick-Lüneburg 2/3 Thaler is a perfect case study. Struck under George Ludwig, the man who would later become King George I of Great Britain, it sits at the intersection of German states history and British royal lineage — and that convergence of collector interests makes the CAC premium especially pronounced.

Why the CAC Sticker Matters More Than Ever

Today’s collector market is sharper than it’s ever been. Grading services like PCGS and NGC assign numerical grades, but let’s be honest — within any given grade, say VF-30, there’s a massive spectrum of quality. A coin at the bottom of VF-30 can look like a completely different animal from one at the top. That gap is exactly where CAC earns its keep.

Their stickers do something elegantly simple: green for high-end coins within a grade, gold for exceptional pieces that arguably deserve a higher number. It’s a secondary layer of quality verification, and in my experience analyzing market data, CAC-stickered coins command premiums ranging from 15% to well over 100% compared to identical non-CAC examples. For a coin like this Brunswick-Lüneburg 2/3 Thaler — not a high-volume trading item, but one with a fiercely dedicated collector base — that premium can be particularly dramatic.

The Coin in Question: Historical Context You Need to Know

Before we talk sticker premiums, let’s talk about why this coin matters. The KM#17 2/3 Thaler (1698–1705) was struck in Brunswick-Lüneburg, a German state whose ruling family was about to inherit the British throne. The “George Ludwig” on the obverse is the same man who would become King George I of Great Britain in 1714.

When this coin was minted, George Ludwig was still the Duke of Brunswick-Lüneburg — not yet Elector of Hanover, let alone a king. The British succession crisis that changed everything is one of the most fascinating episodes in European history. When Queen Anne died without surviving children, the Act of Settlement 1701 barred Catholics from the throne. George Ludwig, as the nearest Protestant relative and great-grandson of James I, became king. Remarkably, that prohibition against a Catholic heir or a Catholic monarch’s spouse wasn’t removed from British succession laws until 2015.

That historical narrative adds a layer of desirability that goes far beyond the coin’s silver content or its technical grade. Collectors of British royal lineage, German states thalers, and Hanoverian history all converge on pieces like this. The provenance story practically sells itself — but only if the coin’s condition and grade can be trusted.

Understanding the CAC Sticker System: Green vs. Gold Beans

The CAC sticker system is simple in concept but carries enormous weight at auction and in private sales:

• Green Sticker (“Bean”): Awarded to coins CAC considers solid or high-end for the assigned grade. A green-stickered VF-30 is, in their opinion, a strong VF-30 — one that brushes up against the next grade level without quite crossing the line.
• Gold Sticker (“Bean”): Awarded to coins CAC believes are undergraded — pieces that, in their assessment, deserve a higher numerical grade. A gold-stickered VF-30 is essentially a coin that should have been graded VF-35 or even higher.

What the Sticker Means for Liquidity

Liquidity in numismatics means how quickly and easily a coin changes hands at fair market value. A non-stickered coin forces the buyer to trust the original grading service’s assessment — and in today’s market, plenty of buyers are skeptical of grade inflation. A CAC sticker removes that uncertainty almost entirely.

For a coin like the Brunswick-Lüneburg 2/3 Thaler, which trades infrequently and where condition is critical to value, a CAC sticker can be the difference between a coin languishing in a dealer’s case for months versus selling within days of listing. I’ve seen it happen repeatedly.

Market Analysis: Current Pricing and the CAC Premium

Let’s look at the numbers. The NGC Coin Price Guide for KM#17 provides a useful baseline. Forum contributors have pointed out that the 1997 Krause catalogue listed the 1701–1705 issues at roughly $90 in VF, with post-1705 issues at $100 in VF. That was nearly three decades ago — ancient history in market terms.

More recent auction data tells a different story. Coins in similar grades have been selling for approximately 100€ (roughly $120 USD) at hammer, before auction fees of around 20%. So the total cost to a buyer at auction lands in the $140–$150 range for a non-stickered example in mint condition or close to it.

Estimating the CAC Premium for This Issue

Based on my analysis of comparable German states thalers and similar mid-tier world coins, here’s what I’d expect in today’s market:

1. Non-CAC, raw or in a PCGS/NGC holder: $120–$160 in VF, depending on eye appeal, strike quality, and the presence or absence of attractive patina.
2. With a CAC Green Sticker: $160–$220 — a premium of roughly 25–40% over the non-CAC equivalent.
3. With a CAC Gold Sticker: $250–$350+ — potentially double or more the non-CAC price, since the gold sticker signals that the coin is undergraded and may sit closer to the next grade level.

These are estimates, and actual results depend on the specific coin’s eye appeal, toning, strike, luster, and the venue of sale. But the pattern holds across the market: CAC stickers compress the bid-ask spread and accelerate sales.

Why This Specific Coin Benefits from CAC Verification

Several factors make the Brunswick-Lüneburg 2/3 Thaler (KM#17) an ideal candidate for CAC evaluation:

• Moderate rarity: It’s not common enough to have a deep, liquid market, but it’s not so rare that only specialists handle it. This middle ground is precisely where CAC stickers add the most value.
• Grade sensitivity: The difference between a low VF and a high VF — or a low Fine — is significant in both appearance and price. A CAC sticker helps buyers pinpoint exactly where a coin falls, which matters enormously for collectibility.
• Historical premium: The George I connection adds a narrative premium that sophisticated collectors will pay for — but only if they trust the grade. A rare variety with a questionable grade is a hard sell; the same coin with a green bean becomes a confident purchase.
• European auction market dynamics: Many of these coins surface in European auctions (hence the €100 hammer prices noted in forum discussions). A CAC sticker provides a universal quality signal that transcends regional grading differences and gives cross-border buyers confidence.

Actionable Takeaways for Buyers

If you’re considering purchasing a Brunswick-Lüneburg 2/3 Thaler or a similar German states issue, here’s my advice:

1. Always check for a CAC sticker first. If two coins are priced similarly and one has a green or gold bean, the stickered coin is almost always the better value — the numismatic value is simply more reliable.
2. Search by reference number. Use KM#17 or Welter 2153 when researching completed auction lots. This will give you the most accurate comparable sales data.
3. Factor in auction fees. A €100 hammer price becomes ~€120 with buyer’s premium. When comparing to dealer prices, make sure you’re comparing apples to apples.
4. Consider submitting to CAC yourself. If you own a strong example that you believe is high-end for its grade, the submission fee (typically $22–$44 per coin depending on tier) can be recouped many times over in the premium.
5. Don’t overlook the historical story. Coins connected to the British Hanoverian succession have a built-in collector base that extends well beyond German states specialists. Market your coin accordingly if you’re selling — the provenance narrative is a genuine asset.

Actionable Takeaways for Sellers

If you have a KM#17 2/3 Thaler and are thinking about selling, here’s what I’d recommend:

1. Get it CAC’d before listing. The time and cost of submission are almost always worth it for coins in this price range. A green sticker can add $40–$60 to your sale price; a gold sticker can add $100 or more.
2. Photograph it well. Forum posts with clear, well-lit images generate more interest and higher offers. Show both obverse and reverse, and include close-ups of any notable features — strong strike details, original luster, attractive patina.
3. Reference the George I connection. In your listing description, mention that George Ludwig became King George I of Great Britain. This broadens your potential buyer pool significantly.
4. Price based on recent auction comps, not outdated catalogues. The 1997 Krause values are historical curiosities, not current market data. Use NGC’s price guide, Heritage auction archives, and Sixbid/Numista for European auction results.

The Broader Market Trend: CAC’s Growing Influence

The Brunswick-Lüneburg 2/3 Thaler is just one example of a much larger shift. Across every numismatic segment — from common-date Morgan dollars to rare German states gold — CAC stickers are becoming a de facto market standard. Major auction houses like Heritage, Stack’s Bowers, and Künker routinely highlight CAC-stickered coins in their catalogues, and many dealers now price stickered coins separately from their non-stickered inventory.

In my analysis, this trend is only accelerating. As collectors become more educated and grading standards face more scrutiny, the premium for verified quality within grade will only grow. For coins like the KM#17, where the market is thin and trust is paramount, the CAC sticker isn’t just a nice-to-have — it’s becoming essential.

Conclusion: The Sticker That Tells a Story

The 1705 (and 1701–1705) 2/3 Thaler from Brunswick-Lüneburg-Celle is more than a piece of silver. It’s a tangible link to one of the most consequential successions in European history — the moment a German duke became King of Great Britain, reshaping the political landscape of the 18th century. For collectors of British royal history, German states coinage, or early modern European politics, this coin holds enduring significance.

But in today’s market, historical significance alone doesn’t guarantee a strong sale. Condition, verification, and liquidity are the three pillars of modern numismatic value. A CAC sticker addresses all three: it confirms the coin’s quality within its grade, provides third-party verification that builds buyer confidence, and dramatically improves the coin’s liquidity by reducing the information asymmetry between buyer and seller.

So, will a CAC sticker double the value of your Brunswick-Lüneburg 2/3 Thaler? For a gold-stickered example, it absolutely can. For a green-stickered coin, expect a meaningful premium of 25–40%. And for a non-stickered coin, you’re leaving money on the table — and waiting longer for the right buyer to come along.

In the end, the CAC sticker is more than a small green or gold bean. It’s a market signal, a trust mechanism, and — for coins with stories as rich as this one — a way to ensure that the numismatic market properly recognizes both the historical and monetary value of your collection.

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