15 Dec 1961: New Year's Greetings #2 (1961)
1 Nov 1961: Opening of National Diet Library
11 Oct 1961: Summer Olympics 1964, Tokyo (1961)
8 Oct 1961: The 16th National Athletic Meeting, Akita
8 Oct 1961: International Letter Writing Week (1961)
2 Oct 1961: Fauna, Flora and National Treasures (1952-1968)
2 Oct 1961: Airmails - Redrawn (1952-1962)
15 Sep 1961: Onuma Quasi-National Park
15 Aug 1961: San'in Kaigan Quasi-National Park
12 Jul 1961: The 75th Anniversary of the Japanese Standard Time
7 Jul 1961: Inauguration of Aichi Irrigation Scheme
29 May 1961: The 52nd Rotary International Convention
25 Apr 1961: Lake Biwa Quasi-National Park
20 Apr 1961: The 90th Anniversary of the Japanese Postal Service
20 Apr 1961: Philatelic Week (1961)
1 Apr 1961: Fauna, Flora, and National Treasure Series (3rd Series, 1961-1965)
15 Mar 1961: South Boso Quasi-National Park
20 Jan 1961: New Year's Greetings #1 (1961)
10 Jan 1961: The 90th Anniv of Japanese Postal Service
JP1961.1Narcissus10 ¥ - yen10 Jan 1961JP1961.3Plum Blossoms10 ¥ - yen28 Feb 1961JP1961.5Camellia Japonica10 ¥ - yen20 Mar 1961JP1961.13Cherry Blossoms10 ¥ - yen28 Apr 1961JP1961.14Peony10 ¥ - yen25 May 1961JP1961.17Iris10 ¥ - yen15 Jun 1961JP1961.21Lily10 ¥ - yen15 Jul 1961JP1961.22Morning Glory10 ¥ - yen1 Aug 1961JP1961.24Bellflower10 ¥ - yen1 Sep 1961JP1961.28Gentian10 ¥ - yen2 Oct 1961JP1961.39Chrysanthemum10 ¥ - yen1 Nov 1961JP1961.40Camellia Sasanqua10 ¥ - yen1 Dec 1961