WH (Luftwaffe)-related: so-called: 'Abzeichen für die Armbinde für Pförtner, Wächter und Fahrstuhlführer im Reichsluftfahrtministerium'

This is an attractive - and actually not that often seen! - WH (Luftwaffe)-related, so-called: 'Abzeichen für die Armbinde für Pförtner, Wächter und Fahrstuhlführer im Reichsluftfahrtministerium o. RLM' (or: specific armband-patch as was exclusively intended for usage by doormen, security- and/or elevator-staff serving within the air-ministry) and that comes in an overall nice- (albeit I deem used- ie. once armband-attached, condition. The black-toned- and woolen-based patch shows a silverish-white-coloured (and left-facing) eagle-device and has an approximate diameter of 5,7 cms. The piece is additionally backed with black-toned linnen (as can be noticed on the pictures). Simply a neat - and interesting! - specific armband-patch that saw usage by certain staff-members serving within the TR-period 'Reichsluftfahrtministerium o. RLM'!