Stamp collectors, this is a really nice find - a complete couple issue of the 1975 American Bankverein stamps from the U.S. postal service! These are catalogue numbers 1187-1188, and they're in unmounted mint condition that's never been hinged, which is pretty much the best condition you can get for collectible stamps.
What 'never hinged' means is that these stamps have never had those little hinges attached that collectors use to mount stamps in albums. That makes them more valuable and desirable for serious collectors because they're completely pristine with full original gum on the back.
The PROPHILA brand guarantees top quality, which is important when you're building a collection. They follow the highest quality standards, so you can trust that what you're getting is authentic and in the condition described. With over 187,000 different offers in their range, they're clearly serious about philately.
Just a quick note about the image - what you see in the sample might not be the exact original you'll receive, especially since these are stamped editions. But the quality and condition will match the description.
If you're building a U.S. stamps collection or specifically collecting 1970s issues, this complete couple set would make a great addition. The American Bankverein theme is interesting too - it's always cool when stamps feature banking or financial history. Whether you're a seasoned collector or just starting out, mint never hinged stamps like these hold their value well and are satisfying to own!