Contact Us
Have a question about an order, selling your coins, or becoming a dealer? We're here to help.
Business Information
CoinDuffle LLC
2622 NW Loop 410San Antonio, TX 78230
United States(210) 735-7131support@coinduffle.com
CoinDuffle is an online-only marketplace; we do not operate a walk-in retail location. Orders are accepted 24/7 through the website.
Call Us
Mon – Fri, 9am – 6pm CT.
Email Support
For order issues, account help, and general questions.
Response Time
Within 24 hours
Support is staffed Mon – Fri, 9am – 6pm CT. Off-hours messages are answered the next business day.
Common Topics
Order Issues
Shipping updates, returns, refunds, or order modifications.
Become a Seller
Interested in listing your inventory on CoinDuffle? Email us to start the vetting process.
Selling to CoinDuffle
Questions about our buyback program, offers, or shipping.
General Inquiries
Press, partnerships, or anything else — we're happy to chat.