I've seen a number of the triple-groove Hemingray 12 over my 4+ decades of collecting, but nearly all were from the 1941 mold set. In fact, this one I grabbed from the free table at Springfield is only the second 1950 mold set example that I've seen. Do any of the Hemingray collectors have examples of both that can be shown side by side? Are they truly an 'uncommon common' or is it just a regional thing (i.e., not seen in the Midwest / northern plains)?