I found a large heavy ceramic tankard (it's either a 40 or 64 oz.) with a fairly decorative handle glazed in a solid dark dark yellow with a pottery mark I can not identify.  I don't think it is very old.  The mark is a very plain embossed handled pitcher inside a square.  That's it; no words or initials, etc.  Does anyone recognize it?  Thanks for any info.

Mona