I picked these up at a antique store the other day for a couple dollars each. I don't know much about ceramic's so I was wondering if anybody could help me with the worth, age and U#'s. The first one on the left front has what looks like S(8)T stamped into it. On the right has THOMAS incused upside down on one of the ears. The large one on the left has THOMAS 475 incused on a ear, the middle one has THOMAS 42 incused on the ear and finaly the large one on the right has no markings but a large metal cap on the top. Any help would be great as I know nothing about these. Thank you to all who help in advance.