I have a proof labeled 119P4. 119P4 is not listed in the 2019 Scott Specialized catalog. Perhaps it is a 119P3 mounted on card. How can you tell if you have a card proof or an "india mounted on card" proof?" Is "india on card" a collectable variety? Or is it just to same to separate the india proof from the card?
Or maybe I have something altogether different?
Here are the scans:
This one is labeled "129P3" with a note saying "India on Card" 129P4 is listed, so I wonder if this is a mislabel meant for the next stamp?
This is the one labeled 119P4: