Zagorsky BL3 Scott C75a Michel Block 3. Please choose one of variants. I will make & send You any scans if requested. The item “1937 Russia USSR Planes MNH Z BL3 Sc C75a Mi Block3 Souvenir sheet Air Mail” is in sale since Tuesday, May 4, 2010. This item is in the category “Stamps\Europe\Russia & […]