Imperial Russia sheet Sc#83a Mi#73 I A a inscription? . 1908. Wmk MNHOG Posted on April 22, 2024 by admin Imperial Russia, sheet of Scott# 83a, Michel# 73 I A a, inscription:???? . In the bottom of the sheet and watermark in the top and bottom margins, MNHOG. Please see scan below for details. Please let us know if you have any questions!