So yup, student found this one at an antique store, paid $30 for it I think, and is using it as a mold to make ceramic ornaments.
It's made of wood, and it's not terribly big... no more than 4". It's got the number 46 carved into the back, which I think is maybe just an old ID number.
Old wood molds are for... ?
Cville_Gardener Clarksville, TN(Zone 6b) Apr 23, 2011
I agree ... it's probably either a butter press or part of a butter mold/press, sometimes called butter stamps.