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In reference to the post above differentiating between an early 43 fighter and a "late" 43 fighter, I would not go as far as to say that steel wrist thong link fighter is late 43...


Flag! Look at the Sheath Type, Stone Pocket Shape and Size, and Stone Type...
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The steel link replaced the brass link in my estimation during the first half of the year...


Big deal, your estimation is wrong...
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The following photo is of a reverse quillion 1943 fighter. ...


Sure, a Mid 1943 Fighter – again, look at the differences in sheath, spacers, stone pocket type, etc...
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If all else fails, punt...