Like many others, I don't know much about mud. I have these 2 uniparts and would like to know the U number for each. Value would be nice too, but that's optional. The small one is 2 3/4 inches tall and 2 1/4 diameter at the base. The top is stamped Fred M Locke/Victor NY. It may also be incuse stamped and full of glaze, I can't tell. It didn't quite match any of the profiles I saw in an older porcelain guide. The larger one is about 5 1/8 diameter and 3 1/2 inches tall and has the Victor/ R = ()() multipart logo. There are similar pieces to this one in the gallery, but no U # is given. Thanks in advance for your help Thanks to Elton Gish, I found that the larger one is U-670D made in the 1910-20's and the smaller one is U-3 made around 1904. Much obliged