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hi John, thank you for taking the time and helping me out. the Front sight is marked with exact same marking a double crown over a U. its s a dorsal fin shaped front sight and the rear sight is a v. i stripped the gun completely down could not find a S anywhere I did find another strange symbol though, its not an east German star-burst i think its a heat treat type symbol don't know. I found out the fire pin is marked correctly and the ejector is marked Glaten (spelling) below is a pic of the symbol