1920, 3 pia. on 6 pa. deep blue, red handstamped block of 50 with margins on three sides, most mint never hinged and very fine, some perfs and 3rd row apart, large blocks of this issue are very scarce. (Isf. catalogue value for mh blocks 12.700,-€). PROFI archive has not recorded larger blocks than four, an important rarity of Turkey in Asia issues.