Three WWII Period Seaplane Photographs

Three WWII Period Seaplane Photographs - Black and white, gloss finish. The first inscribed "Heinkel He 14, Archiv: WALTER ZUERL" on the reverse, 79 mm x 118 mm; the second inscribed "Do X-3" on the reverse, Agfa postcard backer, 89 mm x 138 mm; the third numbered "10263" on the obverse, inscribed "Do X-2" on the reverse, Agfa postcard backer, 89 mm x 139 mm. Slight age curling, extremely fine.