I noticed what appears to be kind of a "double print" on the stamp, and was wondering if what I found actually "is something".
Issued in 1941, it's not even in my Scott Classic Specialized, and my regular Scott Catalogue doesn't give much information on it.
Is this relatively common? Is it an error? Is there any premium for this kind of thing or does it have the same value as a normal stamp?
What do people think?