cover 1919 (23 July) Polish soldier's envelope from Przemysl to Sierpc cancelled A.P.O. "1" c.d.s. and 1919 (25 July) Field postcard from Tarnopol to France with Polish regimental cachet and "TRESOR ET POSTES" c.d.s. also Polish Corps 1918 (Mar.) surcharged perf. 10k. on 3k. to 1r. on 3k. mint and imperf. 10k. on 3k. 35k. on 1k. and 50k. on 2k. on envelope