Here is another one to chew on for a while. I thought I posted it in this thread but I guess not. Might have thought you would get upset that I keep posting metric stuff in your SAE thread.
Anyway, I’ve had this one for a while and came up with all kinds of theories on exactly what it is. It’s a Craftsman, 28 piece, METRIC Tap and Die Set. OK so far. But the first thing you notice is the green case with yellow printing. I’ve seen green before on the Whitworth set but printing is white. The next thing you notice is the part number, 5209. There was also another strange thing. The taps and the dies do not say “Craftsman” on them. Just U.S.A. and they are hexagonal. I thought maybe it was an Army contract or something.
Now the original 5209 was the first Kromedge, 40 piece, SAE set with round dies. It was in the catalog from ’59 to ’62. It was rereleased in 1974 with a 4-40 in place of the 4-36. The 52091 set filled in the gap between those dates.
Now on the metric side of things, there was the 5500, 28 piece metric set with round dies, also from 1959 to ’62. Then for 10 years, NO METRIC. In the 1972 Craftsman tool catalog the 52095 set is introduced.
Now enter my green set. Remember it’s a 5209 but metric, not SAE. Hex dies, not round. And it’s green. Then, the other day, I was doing some light reading in the 1971 Tap and Die Handbook. You know, the red and white little booklets that come with the Craftsman tap and die sets. (There are 7 different printings as far as I know) And there it was, ***NEW***, 5209 metric set, 28 piece with the exact description of my green set. It doesn’t show up in the regular 71 tool catalog (there are no metric sets at all). And in the 72 catalog there is the “first” metric set in 10 years, the 52095. I guess the handbook was printed later in the year then the catalog. Maybe Sears decided they needed a metric set and went to their manufacturer and said “We need a metric set”. And they said “Sure, but it will take some time for us to stamp the Craftsman logo on them. We have these generic ones”. And Sears said “give me what you’ve got”. So for a few months in late 1971 there was a Craftsman metric set before the 52095. In a green case. Curiosity got me and I looked in the Sears ’71 Fall and Winter Big Book and there it was again.