Paul : I was hoping that you would get more replies , so I will try to help a little more. Some where on the inter-net is a Society Of Antique Modelers site, they have an engine collectors division, MECA . I am new at this computer game & haven`t tried it yet. Some one will maybe tell where it is ? RCM lists a price guide(1911-1965)around $40.00 plus shipping. I follow E-bay , but I think a lot of those items are bought & sold by non-modelers, a lot of speculators,pawn & antique dealers, not a true guide to worth. This seems to be the best site, at least more modelers. Maybe this will open the door a little more. MAX