Identification of old pottery bison or buffalo

[rehterp]

Picked up this wonderful piece of pottery.  Can see the markings pretty well, but no clue who this is.  Glaze is wonderful, rich and old.  Any help out there?  thanks

[rehterp]

The most important picture didn't post sorry

[janetpjohn_la]

It looks more like a code for a glaze or a class than a signature.

Janet

[rehterp]

Thanks Janet.  That is interesting.