Here are my "odd size" cards. It's what you do when you make a boo boo, or have a 1/4 sheet of cardstock left over.. that isn't enough for a full size card. Medallion card is 5x4.25 (this was the oops card).
Smaller cards are 2 1/8 x 5 1/2, and 2 3/4 x 4 1/4" ea. Close up shows intaglio stamping.