Does the S in the format S 7 18 in equal 1/3 positions as the headstamp on 9mm parra and 9mm corto represent Koeniglich Munitionsfabriken,
Spandau, Germany, have a number of these , and they are all WW1 dates
Also S O 9 19 equally spaced on 9mm parra [ Sako or ??? ]
What or who is TM in the format TM B [Sezione del Pirotechnico ]
Section of the Gov’t Arsenal Bologna Italy, But TM ???