The cards finally arrived. Pics distort the measurements a bit since ruler is raised. Actual
size of Wheat is just a hair under 2-5/8” tall and pretty much exactly 1-7/16 wide. These measurements more or less match the official size attributed to the set.
Interestingly the Wilhelm I won in the same auction comes in a full 1/16 of an inch shorter and perhaps 1/32 of an inch narrower.