(1.) Overprinted on Russia #79.
(2.) Valid from March 5, 1918 to March 22, 1918. Per Villem Eichenthal Specialized Catalogue of Estonia.
(1.) Illustration of the genuine overprint from the V. Eichenthal book.
(1.) "g" is different than the original. (2.) Exp. Eo Vaher, 3-15-14.
(1.) Overprint does not match the illustration in V. Eichenthal Specialized Catalogue.
(1.) Overprint on the stamp immediately above.