UNDERCOVER MAIL 1942.10.21
1942.10.21 Poland 30g postal card pmk BRONOWICE.../ KRAKAU cds - h/s Nazi Eagle & Swastika circular censor - pmk LISBOA roller - addressed to "Kapica Jan"/ Alexandre Herculano 41/ Lisboa/ Portugal [Polish Red Cross in London] sender's name "Basik" underlined in red crayon and forwarded to "Jan Basik" in red crayon
UNDERCOVER MAIL 1943
1943 Belgium: 1F Postal Card pmk Brussels-10.8.43 - to Rua do Lareto 10. Lisbon. [arr 18/6] - red Nazi OKW Censor - black octagon UK 'Crown - Passed P.85'
UNDERCOVER MAIL 1945.4.17
1945.4.17 Cover fr: 2½d pmk COULSDON wavy line - to Polish Forces P35 Edinburgh - pmk `POLSKA POCTZA POLOWA/ Nr.1 bilingual cds.
UNDERCOVER MAIL 1946.1.2
1946.1.2 Poland Cover fr: 2x 3z imperf pmk LAZISKA SREDNIE cds - h/s violet Polish censor'678' - addressed to "Polisk Office Box 260/90" - red crayon "P/170" as PO Box 260/90 changed about this time
UNDERCOVER MAIL 1946.2.8
1946.2.8 Switzerland Airmail cover fr: 5x10c pmk WINTERTHUR cds - to P O Box 260/12/ GPO London [Polish Army] - b/s circular `POLSKA POCTZA POLOWA/ Nr.1` bilingual cds [27mm] - opened out for display [sideways & fold]
UNDERCOVER MAIL 1946.5.4
1946.5.4 Poland Airmail postcard fr: 108z pmk BILGORAY cds - addressed to "England/ GPO London EC1/ Box 260/147" - vertical fold Note: pmk shows year slug "45" in error
UNDERCOVER MAIL 1946.6
1946.6 Poland Reg airmail cover fr on back: 10z, 6z pmk Dzbrowa Gornieza cds - to Polish Office Box 260/170 c/o GPO London EC1 - b/s magenta bilingual `.../ No.1/POLISH FIELD POST OFICE` cds
UNDERCOVER MAIL 1946.12.7
1946.12.7 Poland Cover fr: 18z pmk RYBNIK cds - addressed to "Polish Office Box 260/170" - pencil "140" deleted [missent] - pencil "P/170"