Exhibition of Czechoslovak Stamps in London, very RARE block with guide red line (left) and guide blue line (down), issued in exile 28.10.1943. It is an extremely rare type, with a small occurrence. Unofficial publication with the consent of the Czechoslovak government-in-exile. Sheet printed in London in support of the Czechoslovak Red Cross. Dimensions: 120 x 150 mm. An unrepeatable and unique offer from my private collection. Ideal for philatelists with an interest in postal history. Michel - 800€. A total of 7 photos. Please view all photos carefully to form your own opinion on the lot. The shipment will be sent by predetermined methods via Slovak Post with tracking (registered mailing/insured). It will be well packaged, as always. CHECK out my OTHER interesting OFFERS.