Universal Stamps, also known as Coins of The Realm is a great little stamp and coin store. They have a pretty good selection of stamps and coins. They also stock really nice supplies for the stamp collector. You can get specialized binders/containers and extra sheets to keep your stamp collection in mint condition and also smaller sized binders/containers for when you travel to stamp shows. The local phone number is 301-340-1640. The store is located on the West side of Rockville Pike, just after the strip mall with Jos A Banks and right before the strip mall with A&J Restaurant.