Can anyone provide information about front sights marked TS'G' on the front of the sight. I never see these referred to in literature and have only ever seen a picture of one. That picture was on an S'G' in the 1,847,xxx range with a barrel dated 9-43.
Since its the only example which I have any knowledge of I was wondering if the sights with this marking ever appeared in any other serial number range or barrel dates.

Thanks for any information!
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