Postal stationery Jeff,
it was common in the early days for new collectors
to cut around the postcard image to get the "stamp"
for their collection.
Stationery wasn't appreciated as much, or could not be stuck in an album.
I'd suggest the printing ID will not apply
to "cut squares"
The thickness of the paper is the easy ID.
Oft times writing appears on the back
Stationery cut square 2kr

2kr Yellow

