I believe I am in possession of a Kalamazoo KM-21 from 1936 in very good condition and am posting here to inquire about it. There is a stamped number inside the body of the instrument labeled “921B”, and a handwritten number reading “31” beside it. I assume 921B is the model number and 31 means that this was the 31st one made? What would this item be valued at? Am I correct in my assumption that this is the 31st instrument of this model made? Is there anything else special about this mandolin?
I have taken some quick and amateur photos of the instrument linked here.
Thanks for the help.
