Your formal expressions to describe woodsaws are very interesting. One thing confuses me though. In an expression like 14+15, the left number denotes the teeth on the right side of the saw, and vice versa. (I guess it´s too late to change it now after you´ve done all that work).
I am thus posting an updated table.
Great work MiniChamp! Some thoughts about dating (91mm): I believe they changed 27 teeth style to 29 teeth with small nick in great transition period 1951-1952 when many new tools were introduced. Later (c.1957) they started tip opening wood saw type without nail nick. Time of changing asymmetric to symmetric teeth in 1960s is unknown but earlier JazzBass offered mid. 1965 according to statistics. What do you think?
You are right, they didn't go from 27 to 29 teeth in early 1950s just changed nail nick type from large one usual in last 1940s to small nick. Looks like they produced 39 teeth saw till 1957. Here is my Champion with 39 teeth saw, post 1957 hidden rivets but old (pre1957?) square LNF nick and rounded bail.
What are the blade stamps on your knife with 29 teeth saw with nail nick?
My Benrus and other 1940s knives have long nail nick Earlier knives from my friend Rene (aka Der Eidgenosse YouTube ) have small nail nick.
So we need more knife pictures from that period to tracing the changes . Maybe MTO members can show knives they have.
BTW 236 aU you shown above has visible rivets and VOS CB/ VSSR stamp that was introduced c.1957 (IMHO) instead of previous VO CB/VSS (1952-1957) so your knife is c.1957.
Sorry, MiniChamp, I forgot to show another side of this knife. It has fiber scales and older style can opener. I'll ask Rene show us blade stamps when he come back from his Switzerland trip.
Blade stamps of knives shown above from Rene ES aka Der Eidgenosse
Hi, MiniChamp, here's one more saw to your pics collection, Woodsman mid.1950s
I recently obtained what I believe is the mid 50s Woodsman or 236u with the 19+20 tooth saw blade. Over all pretty good condition and trying to determine value to sell or trade.