Cal. Pottery Flame Serving Dish Set Gorgeous MCM

Beautiful California Pottery Flame 2 piece Serving Dish Set 12" Across 1960s Mid Century Modern California Pottery Flame Glaze Back Side has a Very Shiny Black glaze, so Writing is very hard to read. It does say 298 146 USA then on the other side Cal and numbers I can't make out. This is a Really Gorgeous Piece. It's in Perfect Condition. No Chips, Crazing, Cracks, Beautiful.