I really wasn't planning in buying one period but a IIIc deal came along that is hard to pass up. Most of the items I could identify and price... One was a bit perplexing. Does anyone know what this lens might refer to: Voigtlander Anastigmat "Skopar" 13,5cm 1:4.5 ...and potential value? its a M39 lens i might pick up tomorrow as part of a kit but I can't seem to find anything about it. Perhaps the sellers description is wrong? Or perhaps the lens was harvested from a larger format camera and repurposed?