When purchasing unused 19th century stamps with no gum you must be VERY careful. A friend of mine who certifies stamps for one of the larger companies told me that actually less than 20% of 19th century stamps...
I often notice many collections and lots being billed as “great investment”. Most of that is just hype and rhetoric used to sell that particular collection. First thing one should realize that ANY stamp with a...
I notice the early 20th century carmine and lake error of colors give a lot of collectors trouble. These stamps were printed accidentally with the wrong color ink. These errors mean the difference in thousands...