SS SD 'Sicherheitsdienst' Personnel's Sleeve Diamond (Ärmelraute für SD Mitglieder). The patch is showing neatly machine-embroidered 'SD' (indicating Sicherheits Dienst) in silver-white linnen on a black wool base. The sleeve diamond is complete with its original RZM label ('A-Stück'). Nice example in mint and unissued condition!