Hummel, Signatures and Trademarks
Always look for the signature of Sister Hummel, it will be incised in the base of most pieces.
Every authentic Hummel will have one.
Over the years the trademark has changed. The trademark markings on the bottom of your Hummel can have a profound influence on the value of your piece. This is a trademark used in the 1950′s
Here is a list of known trademarks from 1935, there are some that are undocumented and that aren’t on this list – if you have one it could be rare and extremely valuable