Stamps of Korea, 31 base day
1 to 50 of 52
postage
1957, Jan 31 wmk. zigzag lines (Korea) (no perf info)
| X | 40h | ltultra | telecommunication symbols | |||
| X | 55h | brtgrn | telecommunication symbols |
1962, Jan 31 ITU admission 10th issue unwmk
| - | 40h | dlrose & blk | Globe with map of Korea & ITU emblem |
1966, May 31 women education reform 80th issue
| X | 7w | multi | Women's Ewha University |
1966, Oct 31 Asian Anticommunist League conference issue
| - | 7w | multi | League emblem |
1966, Oct 31 Johnson visit issue
| X | 7w | multi | President Park & President Lyndon Johnson |
1967, Jan 31
| - | 7.00w | multi | Syncom Satellite over globe |
1968, May 31 Postman's Day 1968 issue wmk. winged circle
| - | 5.00w | multi | Mailman’s pouch | |||
| - | 7.00w | multi | Mailman |
1970, Aug 31 paintings (1970 Korea) unwmk
| X | 10w | multi | "Mountain and River" - Yi In Moon | |||
| X | 10w | multi | "Jongyangsa Temple" - Chong Son | |||
| - | 10w | multi | "Mountain and River by Moonlight" - Kim Dooryang |
1971, Dec 31 South-North Korean Red Cross Conference, Panmunjom issue wmk. winged circle
| - | 10w | multi | Red Cross Headquarters |
1972, Jan 31 20th Anniversary of Korea's Membership of I.T.U. issue
| - | 10w | multi |
1977, Jan 31 25th Anniversary of Korea's I.T.U. Membership issue
| - | 20w | multi |
1978, May 31 30th Anniversary of National Assembly issue
| - | 20w | multi |
1979, May 31
| - | 10w | yelgrn & blk | Grus japonensis |
1982, Dec 31 Letter Writing Campaign 1982 issue
| - | 60w | multi |
1983, Oct 31 100th Anniversary of 1st Korean Newspaper "Hansong Sunbo" issue
| - | 70w | multi |
1984, Oct 31 100th Anniversary of Korean Chamber of Commerce and Industry issue
| - | 70w | multi |
1986, May 31 100th Anniversary of Korean Women's Education issue
| - | 70w | multi |
1995, Mar 31 Fungi (1995 Korea) unwmk
| - | 130w | multi | Lentinus lepideus | |||
| - | 130w | multi | Laetiporus sulphureus | |||
| - | 130w | multi | Coprinus comatus | |||
| - | 130w | multi | Russula virescens |
1997, May 31 World Cup 2002 in 1997 issue
| - | 150w | multi | "Chukkuk" - Lee Chul Joo | .20 | ||
| - | 150w | multi | Jules Rimet |
1999, Dec 31 World Cup 2002 in 1999 issue
| - | 170w | multi | ||||
| - | 170w | multi | ||||
| - | 170w | multi | ||||
| - | 170w | multi |
2001, May 31 World Cup 2002 in 2001 issue (5 stamps)
| - | 170w | multi | Switzerland mountains | |||
| - | 170w | multi | Mexico Chichen Itza | |||
| - | 170w | multi | Italy Colosseum | |||
| - | 170w | multi | US World Trade Center & Statue of Liberty | |||
| - | 170w | multi | France Eiffel Tower |
2002, Jan 31 Korea's entrance into the ITU 50th issue
| - | 190w | multi |
2003, Oct 31 Soong Eul School 100th issue
| - | 190w | multi | children |
2013, May 31 20th Anniversary of Korea - Slovakia Diplomatic Relations issue
| - | 270w | multi | Pansori Epic Chant | |||
| - | 270w | multi | Lucnica |
2015, Mar 31 7th World Water Forum issue (no wmk info)
| - | 300w | multi | — | — |
2018, May 31 PyeongChang Winter Paralympic Games issue unwmk (6 stamps)
| - | 330w | multi | ||||
| - | 330w | multi | ||||
| - | 330w | multi | ||||
| - | 330w | multi | ||||
| - | 330w | multi | ||||
| - | 330w | multi |
2018, Aug 31 19th World ARDF Championships issue
| - | 330w | multi |
2021, May 31 Protected Marine Species 2021 issue (no wmk info)
| - | 380 | multi | Caretta caretta | — | — | |
| - | 380 | multi | Eretmochelys imbricata | — | — |
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