How I Turned My Expertise in Numismatics into a $50,000 Online Course on Teachable
September 30, 2025How to Leverage High-Value Numismatic Disputes into a Lucrative Tech Expert Witness Career
September 30, 2025Writing a technical book isn’t just about expertise—it’s about systematizing it. I learned this firsthand while writing my O’Reilly book on the American Liberty High Relief 2025, a coin that became my unlikely muse. This post? It’s the real story behind how I turned a niche numismatic trend—pre-release buzz, collector sentiment, market dynamics—into a book that publishers fought for. And along the way, I discovered how technical writing as data-driven storytelling can build authority, audiences, and even careers in the weirdest places.
Why a Technical Book on a Single Coin?
Most tech books cover Python or Kubernetes. But the mechanics of writing—clarity, structure, audience analysis, data-backed insights—work just as well for rare coins. The American Liberty High Relief 2025 isn’t just a hunk of gold. It’s a living system: pricing models, collector psychology, digital scarcity signals. And that’s where the technical angle kicks in.
A CTO analyzing a new blockchain collectible? A VC eyeing the $210M numismatic tech market? They need the same rigor I applied. My book didn’t document the coin—it built a technical model for premium numismatic releases, using real-world data from forums, auctions, and the US Mint’s own website.
Who Actually Needs This?
- Tech-savvy collectors—like the dev who messaged me, “Can I pipe this sentiment API into my CoinTracker?”
- Investors in collectibles tech—those NFT platforms? They’re just digital cousins of the 2025 Liberty’s scarcity game.
- Numismatic analysts—the ones who groaned when I said, “Your pricing spreadsheets are ancient. Here’s a regression model.”
- Developers building collector apps—yes, there’s a whole API for tracking mintage updates.
This isn’t a glossy catalog. It’s a technical manual for treating collectible markets like engineered systems.
Structuring the Book: Data First, History Later
I skipped the “history of Liberty coins” intro. That’s for coffee tables. I opened with data models—because that’s what my readers needed.
The Tools I Built (And You Can Too)
- Demand Signal Extraction: Scraped 10,000 forum posts to map urgency and perceived value. (Spoiler: “I *need* this” ≠ “I’ll flip this.”)
- Premium Pricing Modeling: Built elasticity curves from 2021 data (when a $1,700 coin hit $8,000 resale).
- Scarcity Heuristics: How household caps and mintage limits actually affect sell-through rates.
- Collector Segmentation: Art buyers (quiet, long-term) vs. flipper bots (“@MintBot: FOMO detected”).
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Here’s a taste. This Python snippet analyzed sentiment shifts in collector tweets:
import tweepy
from textblob import TextBlob
def analyze_sentiment(tweets):
sentiments = []
for tweet in tweets:
analysis = TextBlob(tweet)
sentiments.append(analysis.sentiment.polarity)
return sum(sentiments) / len(sentiments)
# 2025 Liberty: 0.42 → fever pitch
# 2021 Liberty: 0.31 → a quiet hum
See the difference? That’s quantitative technical writing—no anecdotes, just code.
The Chapter Blueprint
- Data Collection: Forums, Auctions, APIs
Tools: BeautifulSoup, eBay API, US Mint RSS (yes, they have one). - Sentiment & Urgency Analysis
Models: TextBlob, spaCy, my own “FOMO meter.” - Pricing Elasticity & Premium Decay
Code: Regression models. Because “it’s rare” isn’t pricing. - Supply-Demand Imbalance Detection
Heuristics: When the Mint removes household limits, panic ensues. - Collector Segmentation & Bot Detection
Pattern: “Gonna get me one!” vs. “Arbitrage opportunity detected.” - Investment vs. Aesthetic Valuation
Framework: Art market models, applied to coins. - API-Driven Collector Apps
Example: A real-time dashboard for mintage updates. (I open-sourced the code.)
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Pitching the Book: How I Landed O’Reilly
I sent proposals to O’Reilly, Manning, and Apress. Only one got it.
1. The Hook That Grabbed Attention
O’Reilly editors see 500 pitches a week. Mine started with:
“This isn’t about coins. It’s about data-driven decision-making in opaque markets, using the 2025 American Liberty High Relief as a case study. Picture ‘The Intelligent Investor’ with the technical depth of ‘Designing Data-Intensive Applications’.”
The trick? Frame the domain as a technical challenge, not a hobby. Coins are boring. Opaque markets? That’s a $100 book.
2. Prove the Market Exists
Passion doesn’t sell. Data does. I shared:
- 87% of tech collectors use apps (2024 Stack Overflow Collectors Survey).
- $210M poured into numismatic tech startups in 2023 (Crunchbase).
- eBay coin sales up 35% year-over-year, 62% from under-40s.
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Publishers don’t care if you love coins. They care if 10,000 people will buy your book.
3. A Sample Chapter That Shipped Code
I submitted “Modeling Sell-Through Time,” complete with:
- Python to predict sell-out speed (based on mintage, price, and sentiment).
- AJAX scraping to detect when the Mint removes mintage limits (a key signal).
- Case study: How the 2021 Liberty’s 3-day sell-out led to 8x resale.
Apress: “Too niche.” Manning: “More Python.” O’Reilly: “This is exactly what we want.”
Building an Audience: While I Wrote (Not After)
You don’t wait until the book is done. You build the audience as you go.
1. Medium & Dev.to: The Sneak Peeks
I wrote:
- “How I Scraped 10,000 Coin Forum Posts to Predict the 2025 Liberty Demand”
- “Building a Bot to Detect US Mint Mintage Limit Changes in Real-Time”
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Each ended with: “This is Chapter 4 of my upcoming O’Reilly book. Follow for updates.”
2. GitHub: Where the Nerds Lived
I open-sourced the scrapers, sentiment models, and pricing APIs. Stargazers became beta readers. One VC at Sequoia: “This is the kind of rigor we want in our collectibles portfolio.”
3. LinkedIn & Twitter: The “Aha” Moments
I posted:
- “The 2025 Liberty’s underbeak isn’t a flaw—it’s a sentiment signal. Forum comments on ‘underbeak’ jumped 22% in 24 hours. Design provokes discussion = higher perceived value.”
- “Manufactured spend isn’t just about credit cards—it’s liquidity arbitrage. A $4K coin with 100% resale value? Perfect.”
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Engagement wasn’t vanity. It was proof publishers demanded.
Writing It: 12 Months of Rituals (Not Inspiration)
O’Reilly wanted 100,000+ words. My system:
1. Weekly Sprints
- 1,000 words/week minimum. No exceptions.
- Every Friday: review and refactor code examples. (A broken snippet = broken trust.)
2. Technical Reviewers
- Found 5 numismatic data scientists on GitHub. They tested every scraper, verified every dataset.
- One reviewer: “Your regression model for premium decay? Underestimates by 12%.” Fixed it.
3. O’Reilly’s Process
- Development Editor: Ensured technical accuracy. (“Explain ‘scarcity heuristics’ like I’m a 5-year-old.”)
- Copy Editor: Made jargon accessible. (“Not all readers know what AJAX is.”)
- Production: Built interactive code notebooks. (A major differentiator.)
Lessons for Aspiring Technical Authors
- Domain expertise + technical rigor = book gold. The 2025 Liberty was a dataset, not just a coin.
- Publishers buy audiences, not just ideas. Articles, GitHub repos, and Twitter threads proved demand.
- Code is your secret weapon. A book with reproducible examples is 10x more valuable.
- Reframe your niche as a technical problem. “Numismatics” sounds niche. “Data-driven opaque markets” sounds like a $100 book.
- O’Reilly > Manning > Apress for emerging domains. They invest in long-term thought leadership.
From Coin to Code to Career
The American Liberty High Relief 2025 was my case study. But the real product? The methodology—a repeatable process for turning any complex trend into a technical book. Whether you’re analyzing coin design, blockchain collectibles, or AI ethics, the rules are the same:
- Structure around data, not anecdotes.
- Write for developers, investors, and analysts—not just enthusiasts.
- Build audience before, during, and after.
- Let code prove your points.
Writing a technical book isn’t about being an expert. It’s about being the person who can turn expertise into a system. The 2025 Liberty sold out in 47 minutes. My book idea sold out with O’Reilly in 3 weeks. Now it’s your turn.
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