1923 (Jan) registered cover from Moscow to New York, franked on both sides with 26 stamps (paying total of 684r or 6r84k, underpaying the current 7r rate, a very small amount which was apparently overlooked by the postal clerk), including 45r (two), plus a variety of existing issues (mostly valued in 1922 rubles, as no stamps had yet been issued in 1923 rubles), with two complete sets of the Fifth Anniversary of the Revolution, non-denominated charity issue (including the scarce airplane), also regular issues, star surcharges, 100,000r on 250r (two) and 250r on 35k Philatelic Tax stamp, fine cover, with arrival (29 Jan) postmarks (Cat No. C1) (Image)

Est.$1,000

1926 (28 Aug) registered cover from Moscow to Switzerland, franked with three different surcharges including 10k (narrow "0" variety), 5k on 1k Foreign Exchange tax stamp on back, v.f., with Lysin arrival pmk. Although airmail stamps were not officially authorized for use on non-airmail covers until September 6, 1926, this cover, processed through the Philatelic Bureau, was obviously permitted to pass a week earlier (Cat No. C6,7var,8) (Image)

Est.$1,000

1926 (2 Sep) cover from Nizhny Novgorod, registered from Moscow to Austria, franked with a combination of Air Post, Definitives and Commemorative stamp, paying 38k (the correct foreign registered letter rate was 28k, hence this letter was probably overweight), with 5k on 1k Foreign Exchange tax stamp on back, contents indicated "2017" in pen, filing folds away from the stamps, fine (Cat No. C7) (Image)

Est.$250