Square Shallow Plates (3) Dinner (3) Salad

I cannot identify the manufacturer of this set of plates however they are in very good shape with no chips or cracks.

Similar to Oneida Sponge Red and Asian Ware that I've seen on line I just cannot identify.  Only one of them has a partial logo on the back (see the picture)...looks like "So...ma" nothing more.  They are a very deep red with a white outline around the rim.  Still in great shape

Dinner Plates 10"

Salad Plates 8"