Warsaw Ghetto postage stamp, denomination 50, never issued

http://lod.ehri-project-test.eu/units/us-005578-irn524138-irn519014 an entity of type: Record

The Warsaw ghetto stamp was donated to the United States Holocaust Memorial Museum in 2007 by Alfred Moritz. 
1941 April 
irn519014 
Warsaw Ghetto postage stamp, denomination 50, never issued 
overall: Height: 4.500 inches (11.43 cm) | Width: 6.000 inches (15.24 cm) 
Warsaw ghetto stamp marked 50 issued by the Warsaw Ghetto Resistance Organization (Żydowski Zwia̜zek Wojskowy). The Warsaw Ghetto in Poland existed from October 12, 1940, to May 16, 1943, when the Ghetto was liquidated by German forces. The stamps were manufactured in an effort to establish a ghetto mail office by the underground, but were not issued for use. 
No restrictions on access 
No restrictions on use 
Rectangular paper stamp with a graphic design stamped on the front in blue ink with the denomination 50, 18 Stars of David on the left, a barbed wire fence in the center, an SS lightening bolt rune within flames on the right, and an outllined border. The reverse is blank. 

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