My father's mother had some dishes like that, but the edges of the plates had a pattern like fork tines make when pressed into dough. I am sorry I don't know the terminology to describe it.
Tom, Thank you for the info. My knowledge of "jadite" is limited to what I have learned here about "jadite" mixer bowls. I was shocked at the price they wanted for these dishes. $6,000. for 800 pieces, or best offer. I posted the link to wiki