Hard to tell from that picture, but it reminds me of a flax break. https://www.google.com/search?q=fla...Uin-AKHTYSBrwQ_AUoAXoECAEQAw&biw=1600&bih=757
You nailed it! There is a picture of exactly that in your link... https://www.kovels.com/kovels-komments/collectors-concerns/flax-break.html
I really like the antique tortilla press answer....Never heard of a flax break.Thanks though that is what it is. I cant figure out though, why you guys never like my pictures