rogdcam,
Sorry, but completely wrong. While fulfilling a philatelic request, the cover is fully genuine to 1930.
Santa Claus handled lots of philatelic mail in this era.
Here is the same handstamp device in use in 1928, and in a non-standard color to boot:

And the replacement device obtained sometime during 1930, used on a Christmas card showing the Santa Claus post office.
