I went through the same thing. My card is a 4 in 1, I measured the card in three spots top, middle, and bottom on the length and width. My card is 1/32 long in length and 1/32 short on the width, all consistent at all spots. Then I checked the toning of the edges with a 10x jewelers loupe for consistency under a bright light all had the same tone. I got this from google search "trimmed cards" I think it was an article from a net54 member, not sure, hope this helps. I did a post similar about the 1935 goudeys what would be the general tolerance of the actual published size . No one could answer that