I assume you mean with respect to bisects on CDVs?
That's Bruce Baryla's award-winning exhibit. I acquired many of the cancel and plate variety items from that exhibit when he broke it down and sold it on
ebay back in 2013.
Quote:
The actual tax rates are never correct on any "used for 50 cent stamp" documents; there is no possibility of any actually being genuine.
Agreed, but my point was that even without thorough knowledge of the tax rates in question, there are enough other warning signs.