The Hummel Mark (TMK-7) 1991-Present In 1991 Goebel made a move of historical import. They changed the trademark once again. This time the change was not only symbolic of the reunification of the two Germanies by removal of the West from the mark, but very significant in another way. Until then they used the same trademark on virtually all of their products. The mark illustrated here is for exclusive use on Goebel products made from the paintings and drawings of M.I. Hummel.