Chris: I'll go looking for the Want-T0-Buy and post there, thanks.
Mark: Thanks, the SR# is 656xxx and I believe it was made in 1936 or 37.
Mike: I bought this K-22 at auction and the photos didn't show enough detail to reveal there was no rear sight.
Richard: Obviously I was hoping for more like $50 but beggars can't be choosers. Thanks to all.