Russian Topical Stamps: MATHEMATICS

Issue year	Catalog Number			Issue Description	Print run	Perf.	Notes
Issue year	CPA	Michel	Scott	Issue Description	Print run	Perf.	Notes
1944
	931	928	945	30k gray, Chaplygin, mathematician	5,000	12,5	MNH, EF
	932	929	946	1r brown, Chaplygin, mathematician	2,000	12,5	MNH, EF
1946
	1046	1023	1050	30k brw, Chebyshev, mathematician	5,000	12,5	MNH, EF
	1047	1024	1051	60k gray, Chebyshev, mathematician	3,000	12,5	MNH, EF
1951
	1628	1584	1575	40k brown, Lobachevski	1,000	12,5	MNH, EF
	1635	1578	1570	40k purple, Sofia Kovalevskaya	1,000	12,5	MNH, EF

	1664	1607	1604	40k black, Mikhail Ostrogradski	1,000	12,5	MNH, EF
1956
	1857	1797	1792	40k brown, Krylov, Mathematician	1,000	12:12,5	MNH, EF

	1890	1830	1822	40k brown, Nikolai Lobachevski	2,000	12,5	MNH, EF
1957
	2000	1936	1932	40k lilac, Euler, Mathematician	1,000	12,5	MNH, EF

	2014	1955	1951	40k red-brown, A. Liapunov	1,000	12,5	MNH, EF
1963
	2832	2793	2713	4k blue, Krylov, Mathematician	2,500	11,5	MNH, EF
1966
	3310	3246	3151	6k brown, Mathematician Congress	4,000	11,5	MNH, EF
1973
	4309	4200	4154	4k orange, Petrovsky, mathematician	3,750	11,5:12	MNH, EF
1981
	5154	5036	4906	4k multicol, Keldysh, mathematician	3,000	11,5	MNH, EF

	5237	5119	4988	4k multi, Lavrentiev, mathematician	3,300	11,5	MNH, EF
1983
	5426	5306	5176	4k, Al-Khorezmi, mathematician	4,200	12,5:12	MNH, EF
1987
	5876	5757	5600	5k blue, Ulugh Begh, mathematician	2,700	11,5	MNH, EF

Stamps are referenced by CPA Stamp Catalog (Moscow, 1983), Michel (2002/2003) and Scott (2002/2003).
Stamp from set marked (*) my be available as single stamp.
CPA - "Souzpechat" Central Philatelic Agency under the Ministry of Communications of the USSR. CPA catalog numbering of 1918-1980 RSFSR and USSR postage-stamps are accepted in the Russia up to days ( have a look at V.Soloviev "1857-1991 Postage-Stamps of Russian and USSR. Catalog - Reference. 2002/2003 ".
The number of stamps printed (column Print run) is quoted in millions.
MNH - Mint never hinged
MLH - Mint lightly hinged
MH - mint hinged
F - fine stamp condition
VF - very fine stamp condition
EF - extremely fine stamp condition
S - superb, better than EF
SEC - Special Event Cancel
CTO - Cancelled to order
Imperf. - Imperforated stamp