Many years of scamming unsuspecting people. They prey on those who inherit collections and don't know what they have. Bought a collection from a friend of mine. Told him that nothing he had was of value. The next week one stamp from that collection was in their showcase for almost 2 times what they gave him from the entire lot. They do this regularly. Know what you have or you will be scammed by these dishonest dealers. They'd pay $1 for a set of Zeps if they could get away with it.
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