Bidspirit auction | Imperial Russia - Stamps and

Imperial Russia - Stamps and Postal History - 1908, plate proof of 7k in light blue, perforation 14½x15, two-side margin horizontal pair with 3 pearls at left on each stamp, printed on wove paper with vertical varnish lines, no gum as produced, VF and very rare, Est. $4,000-$5,000 , Scott #78