Russia Empire 1908 Definitives FIRST issue VERY RARE FULL Set of 15 Stamps in blocks 2x2 with margins and in gutter pairs MNH !!!

The stamps are in perfect condition (**), with varying margin arrangements. A beautiful, rare set of "quarter-blocks" consisting of two gutter pairs. The 1-ruble stamp does not have gutter pairs (they don't exist), so the set includes a "regular" quartblock. The value and beauty of this lot also lie in the presence of the quarter-block margins, which facilitates identification of the first, rarest and most expensive, issue of this definitive stamp issue of 1908.