This is a one-of-a-kind production relic for the five-cent wrapper for the 1965 Topps Battle series. Ex-Topps Vault.
I presume Mastro was the first auction house to sell this item after the consignor acquired it from Topps Vault. They wrote it up as printed on glossy paper, measuring 11-1/8” x 10” with penciled-in editorial notes.
After a quick Google search and perhaps a few more owners (who knows!), Hake’s Auctions re-sold it in March 2013 for $172. The editorial note on this scan says, “Fill in white shots on blue plate” referring to the white dots above the black square advertising an “Extra Military Emblem In Each Pack.”
While the following 1965 Topps Battle wrapper has a different advertisement on the left-hand side, the white dots were removed.
Hake’s included the following scan of the official COA from the Topps Vault.