These numbers are based on what I could find online with pictures front and back of graded Harringtons Ruth, which are 23, no duplicate slab numbers plus my raw Ruth for 24. I know this is not much for numbers, but it’s a start

Type 1: 6 (No Quarts) out of 24
Type 2: 18 (Quarts) out of 24
Type3: 4 (Apostrophe/Quarts) out of 18 (Quarts)

I found 3 more online I’m recording the slab numbers so there are no duplicates so far for PSA & SGC.
This should be a legitimate type / variation for the Harringtons Ruth I have had this card since 1980 and noticed the differences that I seen over the years and feel it should be recognized