Old Currency Coin Exchange Platform
Your Trusted Platform to Buy & Sell Old Currency Coins
About us
At CoinNumber, we are passionate about the history, rarity, and value of old and collectible currency. Whether you’re a seasoned investor, a passionate numismatist, or someone exploring inherited treasures, our platform offers a trusted marketplace to buy and sell authentic vintage coins and banknotes — from ancient and medieval coins to rare paper currencies, mint errors, and historic world money
Services
Coin Authentication & Verification
Marketplace for Buyers
Listing & Selling Coins
Explore Categories
Ancient & Medieval Coins
Colonial & Pre-Independence Coins
Precious Metal Coins (Gold, Silver, Platinum)
Buy
Looking to own a piece of monetary history? Our marketplace features verified listings of rare and collectible old currency coins from trusted sellers around the world — including ancient, vintage, and historic coins that tell a story of their era.
Sell
Have an old currency coin you want to sell?
Whether it’s a rare colonial coin, a discontinued national currency, or a historic mint error, we’ll help you find the right buyer — and get the value it deserves.
Personalized Support
Have questions about a listing, coin value, or transaction?
- Our expert team is here to help
- Support via email, live chat, or scheduled consultations
Whether you’re buying, selling, or just exploring, CoinNumber.online is your trusted destination for rare and old currency coins.
Need Help Fast?
We offer real-time support for urgent issues, including login problems, account restrictions, and delayed transactions.
You can trade a wide range of collectible coins, including ancient, medieval, colonial, pre-independence, commemorative, and discontinued national currencies. We also accept listings for rare banknotes and mint error coins.
We offer optional coin verification services through expert numismatists. You can also include certification from recognized grading authorities (like PCGS, NGC, or ANACS) to boost buyer trust.
Yes. We use a secure escrow system that protects both buyers and sellers. Funds are held until the buyer confirms receipt and satisfaction with the item.
Yes. You must create a free account to buy or sell on CoinNumber.online. This helps us maintain a safe and transparent marketplace for all users.
Contact Us.
General Inquiries
For questions about listings, coin verification, or how the platform works, email us at: support@coinnumber.online
Business & Partnerships
Interested in partnerships, third-party verification, or media inquiries? Contact our business team: business@coinnumber.online
Account & Technical Support
Having trouble logging in, managing your listings, or making a purchase? Our support team is available for real-time help. Telegram Support: @CoinNumberSupport