Germany, Wehrmacht. An Aufklärungsgruppe 11 Long Service Commemorative Plaque Auction Archive with a “21/90” silver content

with a “21/90” silver content mark

red and green thread details

with a wreath composed of oak leaves and laurel leaves below

inscribed "19" to the left and "38" to the right (1938) and "Jagdstaffel "Boelcke" " below

Germany, Wehrmacht. An Aufklärungsgruppe 11 Long Service Commemorative Plaque Auction Archive with a “21/90” silver content(Aufklrungsgruppe 11 Erinnerungsplakette). Constructed of a black painted wooden frame, surrounding a central raised depiction of the Tannenberg Memorial near Hohenstein, East Prussia (now Olsztynek, Poland), situated above an inscription of TANNENERG NATIONALDENKMAL, situated above a silvered plaque affixed to the lower edge of the frame bearing an engraved inscription of FR 12 JHR. DIENSTZEIT 1. AUFKL. GR. 11 (FOR 12 YEARS OF SERVICE TIME TO