i have a 3 level globe wernicke bookcase. 2 of the knobs are misisng and the glass is broken out of one section. other than that it is in good shape for an almost 100 yr old piece of furniture. the labels in the sections read The Globe-Wernicke Co
Cincinnati OH
Branches of Agencies everywhere
patented
size grade
D 10 1/4 299
what would the approximate value of this item be?