The Gold Standard issue or Small Head issue was the first definitive series of postage stamps issued by the Soviet Union between 1923 and 1927. The stamps were designed by Ivan Shadr.
Red Army Soldier: a Gold Standard stamp of the USSR, 1 gold rouble, red and brown, imperforate, 1923
imperforate versions of the Gold Standard issue of 1923–1927
Perforated versions of the same stamps
The first USSR stamps or First All-Russia Agricultural Exhibition issue appeared in August 1923 as a series of Soviet Union postage stamps. Its designer was the Russian artist Georgy Pashkov.
Gold Standard issue
…Definitive stamps of the Soviet Union First USSR stamps Gold rouble…
Reaper: the first stamp of the USSR, 1 ruble, imperforate, 1923
The Soviet Union 1923 CPA 92 stamp
The Soviet Union 1923 CPA 93 stamp
The Soviet Union 1923 CPA 94 stamp