1958 was the first year listed in my Blue Book of Gun Values as 1961 is the oldest catalog I have other than one from the 40's and one from the 30's. Somewhere I had found an old article or posting about the LH 30's that stated 1960 was the first year for them, which is also the year we dated mine back to. Everything else I posted above is based on going through all of my catalogs.

I'm thinking the 67's were after the 30's but I could be wrong. I know there was a Model 69 later on in the early/mid 1980's which I think was just an updated (aka cheapened up) Model 67 for the most part.