Claus, that's the blade for sure. That's the pattern minus the shell pullers. 1937 is later than I had thought. I have no catalogs from that period. Only 1898, 1905, 1914, 1925, 1926, 1929 and 1957.
That blade is a cigar box cutter? Here's a couple more from my collection. The Wusthof Springer may be a prototype.
Thank you so much.
Bruce