Vtg Early Fiesta Ashtray Original Ivory 1936-39 Bottom rings unmarked

Vtg Early Fiesta Ashtray Original Ivory 1936-39 Bottom rings unmarked IT IS IVORY- NOT WHITE- I tried to take different photos and each one makes it look white but it is not. Estate find- I do not know much about this item other then what I researched It is unmarked See photos no chips or cracks just some mold marks from early glazing techniques on back measures a little over 5" diameter Thanks