I am more interested in information & opinions about this pump than value, but posted here because I am curious about value opinions as well. This pump tag shows to be a Southwest OK-7D, but the top is not like the one shown in Jack's book. The book does show this top on an "unknown" 1925 Southwest Pump with unknown value. The rest of the pump does not match the "unknown" pump. Do you guys think that this is a hybrid pump, maybe when they switched models they used the leftover tops? I definately like this top better than the standard one. Opinions on value or any other input would be greatly appreciated. Glass has multiple cracks, surface rust with minor pitting, straight & solid.
Thanks
James