1925.5 Gr. airmail stamp the LOPP with red cancel "SAMLOTEM" on airmail postcard from "Warszawa 10. III. " with red boxed handstamp of one line "PROBRANO / PERCU. . . . Zl. . . . Gr. . . . " to Gdansk with red violet two-line cancel "with airmail transported flight post office Gdansk 5", superb