Drop forged in the USA... Controlled Steel was a brand name used by the JP Danielson Toolmaking concern. According to Alloy Artifacts (again) it would probably date to the 1930s, the small 6.5 A marking refers to the nominal length of the tool- 6.5"- no explanation for the "A".
They came in 26 different thicknesses, the "A" model was the thinnest.
ReplyDeleteThank you! I never could have guessed that.
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