Hi Mark,
Sorry for being so late in replying. The "scriptic" S is actually a capital S in "Fractur", a Germanic script that was taught for many years prior to W/W.II. If you do a search on old forum files,you will find much info on the alphabetic system.
There is, how ever, almost nothing known about why Mauser elected to mark parts thusly.
Tom A
cs/thumbs down
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