Montenegro 2NC18-23, WW II Occupation 1943 Airmail

VF LH. 1943 Italian occupation of Montenegro. New stamps for Montenegro imprinted, "UPHA ROPA." Showing airplanes over Montenegro cities and countryside. Italy occupied Montenegro until 1943 when it was defeated by Allied forces. The Germans then took over the occupation through 1944. Note, centering on 20L is "just fine" at left.