It's been a long time since this set or sets have been discussed. Perhaps new information has surfaced since our earlier posts.
Although the set is commonly given a 1921 date. I believe it was issued in multiple years. One of my Frederick Fotos is of Oscar Stanage, who didn't play with Sacramento until 1922. He played for Los Angeles in 1921.
https://www.net54baseball.com/showth...fs#post1162336
Let's see examples and also opinions on whether the large size Frederick Fotos were "proofs" on creating the actual smaller cards.
Patrick