Stamps of Costa Rica, 27 base day
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postage
1984, Jun 27 Jade Museum Artifacts unwmk p. 13.5
| - | 4col | multi | Figurines Jade Museum | |||
| - | 7col | multi | Anthropomorphic figure of sedative stone | |||
| - | 10col | multi | Ceramic Zoomorphic bowl |
1984, Jul 27 Olympics 1984 issue (6 stamps)
| - | 1col | multi | ||||
| - | 8col | multi | ||||
| - | 11col | multi | ||||
| - | 14col | multi | ||||
| - | 20col | multi | ||||
| - | 30col | multi |
1988, Jun 27 125th Anniversary of Anglo-Costa Rican Bank issue p. 10.5
| - | 3col | multi |
1989, Nov 27 100th Anniversary of National Geographical Institute issue p. 13.25
| - | 18col | multi | Dr. Henri Pittier |
1990, Feb 27 100th Anniversary of National Theatre issue p. 10.5
| - | 5col | multi |
1992, Nov 27 100th Anniversary of Limon issue p. 12.5
| - | 100col | blk & dkultra |
1993, Aug 27 Tropical Rainforest flora p. 10.5
| - | 2col | multi | Passiflora vitifolia | |||
| - | 35col | multi | Gurania megistantha |
1998, Feb 27 World Cup 1998 issue
| - | 50col | multi |
1998, Jul 27 25th Anniversary of National University, Heredia issue
| - | 50col | multi |
2006, Nov 27 State Symbols issue
| - | 155col | multi | ||||
| - | 155col | multi |
2007, Jul 27 Virgin of Los Angeles - Patron of Cartago issue (no perf info)
| - | 115col | multi | ||||
| - | 115col | multi | ||||
| - | 1000col | multi |
2009, May 27 Childrens Literature issue
| - | 65col | multi | — | — | ||
| - | 65col | multi | — | — | ||
| - | 65col | multi | — | — | ||
| - | 65col | multi | — | — |
2010, Jan 27 International Holocaust Remembrance Day issue
| - | 500col | multi |
2017, Sep 27 America 2017 issue (no wmk info) p. 13
| - | 420col | multi | — | — | ||
| - | 650col | multi | — | — |
airmail
1945, Dec 27 60th Anniversary of National Red Cross Society issue unwmk (no perf info)
| - | 1col | blk & red | Florence Nightingale and Nurse Cavell | — | — |
1950, Jul 27 National Agriculture and Industries Fair issue (14 stamps)
| - | 1c | yelgrn & blk | Bos taurus | — | — | |
| - | 2c | bl & blk | — | — | ||
| - | 3c | brn & blk | piña | — | — | |
| - | 5c | bl & blk | Musa sp. | — | — | |
| - | 10c | grn & blk | Bos taurus | — | — | |
| - | 30c | vio & blk | — | — | ||
| - | 45c | multi & blk | Coffea sp. | — | — | |
| - | 50c | graybl & blk | Musa sp. | — | — | |
| - | 65c | bl & blk | piña | — | — | |
| - | 80c | car & blk | Coffea sp. | — | — | |
| - | 2col | org & blk | Bos taurus | — | — | |
| - | 3col | bl & blk | — | — | ||
| - | 5col | red & blk | Musa sp. | — | — | |
| - | 10col | Coffea sp. | — | — |
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