1919, 10 rubel perforated together with 3,5 and 5 rubel imperforated with additional franking tied by cds. "TALLINN-SADAM -7 5 19" to local registered cover addressed to A. Teetsov. Cover folded twice without affecting the stamps, otherwise fine. This is the only known cover with all Rubel-values, especially the 10 rubel value is extremely rare with only 11 copies printed and only one other copy known as single franking on cover. A great and very attractive rarity of Estonian Philately, signed Mikulski a.o. with his certificate (1994) and certificate Löbbering BPP (2015)
