A 1920 Polish Plebiscite Zone Forces Badge

A 1920 Polish Plebiscite Zone Forces Badge; White metal with red enamels, numbered "54" on the reverse, illustrating the Polish eagle in the centre, inscribed "POLONIAE BENE MERENTIBVS" above, "LVTETIA" to the left, "PARISIORVM" and dated "A.D. MCMXX" (1920) below, 44.5 mm x 45.6 mm, support plate marked "POLSKAMISJA WOJSKOWA ZAKUPOW" (Polish Military Mission Purchases), with screwback, light contact and surface wear, better than very fine.