Raymond— the Mantle Mask or Plaque has for many years been listed in the SCD Standard Catalog as a Topps product that you could send away for. Supposedly it was offered on high # 1963 packs. I have never seen a pack with the offer. There is some doubt as to it’s actual origin. But it is scarce and because of it’s Catalog listing usually goes for decent money.
Below is a link to some info on it from the great blog of Dave Hornish
https://r.search.yahoo.com/_ylt=AwrN...fANXKoc0PWGn8-