goldpelican Well-Known Member Silver Stacker Jan 5, 2015 #2 I'm sorry I've never heard of that, and after a bit of poking around, cannot find any reference that any postage stamps have ever been "backed" by PMs. Got a reference?
I'm sorry I've never heard of that, and after a bit of poking around, cannot find any reference that any postage stamps have ever been "backed" by PMs. Got a reference?
