183 DIFFERENT Coins from 183 Countries (BU). BU – Brilliant Uncirculated. A Diverse Mix of BU Foreign Coins from 183 Different Countries – Travel the World from Your Living Room! Great for Hours of Fun Searching and Cataloguing Coins From Around the World. THANK YOU FOR YOUR BUSINESS! With 5,000 + coins listed we are always adding new inventory and having sales on older inventory so be sure to follow us for updates and exclusive deals!