Well, I will throw mine out there while were at it.  I have a portion of a
2 1/8 in diameter saucer with a red floral print, and the mark also in red
looks like a bull with the word MAESTR.... and, underneath this,  ORIEN....
The mark and the print are both not of the best quality, the paste/glaze is
pearlware (based on blue in pools of foot ring).  The burned house left
quite a few machine cut square nails and no wire, so I am assuming an early-
mid 19c construction date.

Thanks, RKimmel