Meyers Orts- und Verkehrs-Lexikon des Deutschen Reichs (Meyers Gazetteer), online edition, with GOV (genealogy.net) for post-1945 Polish equivalents · meyersgaz.org / gov.genealogy.net
Meyers 1912 #20675073 'Sandkrug 2)' D., Kr. Angermünde, RB Potsdam, Brandenburg, Preussen (1912 coordinate 52.88607, 13.87376)
Record reads 'Uckermarke'; Ückermünde (Pomerania) is the alternative only if that were a corruption.