Collect, Track & Trade

The all-in-one platform for coin, currency & stamp collectors. AI grading, marketplace, live auctions, and expert courses — all in one place.

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No credit card required · Cancel anytime · $9.95/month after trial

Collectors

Coins Tracked

Active Listings

Live Auctions

14+ Powerful Collector Tools

Everything you need to build, track, and grow your collection

🔬

AI Coin Grading

Upload a photo and get an instant AI-powered grade with tips

📦

Collection Tracker

Track every coin, stamp, and note with purchase price & current value

📊

Value Dashboard

See your collection's total value, gains, and portfolio breakdown

🏪

P2P Marketplace

Buy and sell directly from fellow collectors via PayPal

🔨

Live Auctions

Bid on rare coins and collectibles in real-time auctions

🔔

Price Alerts

Get notified when coins you want hit your target price

⭐

Wishlist

Track coins you're hunting with target grades and prices

💬

Community Forum

Discuss coins, ask questions, share finds with fellow collectors

📚

Coin Encyclopedia

34+ coin types with full specs, history, and composition

🎓

Expert Courses

Learn grading, errors, paper money from expert instructors

🌍

Public Collections

Share your collection publicly and inspire others

📥

Bulk CSV Import

Import your entire collection at once via spreadsheet

🔍

Coin Explorer

Research coins with filters by country, year, and type

✅

Seller Verification

Verified seller badges build trust in the marketplace

Ready to Start?

Join thousands of collectors already using A Flip Of A Coin

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⭐⭐⭐⭐⭐

"Been collecting for 20 years. This platform has everything in one place. The AI grading tool alone is worth the subscription!"

Mike D.

New York, NY

⭐⭐⭐⭐⭐

"The marketplace is fantastic. I've bought and sold dozens of coins and the PayPal integration makes it seamless."

Alice J.

Chicago, IL

⭐⭐⭐⭐⭐

"The error coin course changed how I look at pocket change. Already found two doubled dies worth real money!"

Bob S.

Austin, TX

${(featuredListings as any).results?.length ? `

🏪 Recent Marketplace Listings

View All →

${(featuredListings as any).results.map((l:any)=>`

${l.image_url?' '+l.title+'

':(l.type==='coin'?'🪙':l.type==='paper_money'?'💵':'📮')}

${l.type?.replace('_',' ')} ${l.grade?'· '+l.grade:''}

${l.title}

${[l.year,l.country].filter(Boolean).join(' · ')}

$${Number(l.price).toFixed(2)}

`).join('')}

` : ''} ${(liveAuctions as any).results?.length ? `

🔨 Live Auctions Ending Soon

View All →

${(liveAuctions as any).results.map((a:any)=>`

🔴 LIVE

${a.type==='coin'?'🪙':a.type==='paper_money'?'💵':'📮'}

Live Auction · ${a.bid_count} bids

${a.title}

Current Bid

$${Number(a.current_bid||a.starting_bid).toFixed(2)}

`).join('')}

` : ''}