Stamps of Kenya, 13 base day
1 to 50 of 60
postage
1971, Dec 13 1971 issue - seashells (1971 Kenya) unwmk (15 stamps)
| X | 5c | multi | Phardonella perna, p. 14.5 | .20 | .20 | |
| X | 10c | multi | Mitra episcopalis, p. 14.5 | .20 | .20 | |
| X | 15c | multi | Clanculus puniceus, p. 14.5 | .20 | .20 | |
| X | 20c | multi | Mauritia mauritiana, p. 14.5 | .20 | ||
| X | 30c | multi | Sanhaliotis varia, p. 14.5 | .20 | ||
| X | 40c | multi | Trochus flammulatus, p. 14.5 | .20 | ||
| X | 50c | multi | Janthina globosa, p. 14.5 | .20 | ||
| X | 60c | multi | Cassis rufa, p. 14.5 | .20 | ||
| X | 70c | multi | Nautilus pompileus | — | — | |
| X | 1sh | multi | Chicoreus ramosus, p. 14.5 | — | — | |
| X | 1.50sh | multi | Charonia tritonis, p. 14.5 | — | — | |
| X | 2.50sh | multi | Fasciolaria trapezium, p. 14.5 | — | — | |
| X | 5sh | multi | Turbo fluctuosus, p. 14.5 | — | — | |
| X | 10sh | multi | Conus textile, p. 14.5 | — | — | |
| X | 20sh | multi | Pterocera scorpio, p. 14.5 | — | — |
1977, Dec 13 minerals (1977) (15 stamps)
| X | 10c | multi | gypsum, p. 14.75x14.25 | .20 | ||
| - | 20c | multi | trona, p. 14.75x14.25 | .20 | ||
| X | 30c | multi | kyanite, p. 14.75x14.25 | .20 | ||
| X | 40c | multi | amazonite, p. 14.75x14.25 | — | — | |
| X | 50c | ol & multi | galena, p. 14.75x14.25 | .20 | ||
| - | 70c | multi | Fossilized Wood, p. 14.75x14.25 | — | — | |
| X | 80c | multi | fluorite, p. 14.75x14.25 | — | — | |
| X | 1sh | multi | amethyst, p. 14.5 | .20 | ||
| X | 1.50sh | multi | agate, p. 14.5 | — | — | |
| X | 2sh | multi | tourmaline, p. 14.5 | — | — | |
| X | 3sh | multi | aquamarine, p. 14.5 | — | — | |
| - | 5sh | multi | Rhodolite garnet, p. 14.5 | — | — | |
| X | 10sh | sapphire | sapphire, p. 14.5 | — | — | |
| X | 20sh | multi | ruby, p. 14.5 | — | — | |
| - | 40sh | multi | green garnet, p. 14.5 | — | — |
1988, Oct 13 arap Moi presidency 10th issue (no perf info) (7 stamps)
| - | 1sh | multi | swearing-in | — | — | |
| - | 3sh | multi | Soil protection | — | — | |
| - | 3.50sh | multi | Nyayo bus | — | — | |
| - | 4sh | multi | — | — | ||
| - | 5sh | multi | Moi-University | — | — | |
| - | 7sh | multi | — | — | ||
| - | 10sh | multi | Pres Moi & Mrs Thatcher | — | — |
1995, Jan 13 Kenya Society for Prevention of Cruelty to Animals issue (5 stamps)
| - | 6sh | multi | Equus asinus | — | — | |
| - | 14.50sh | multi | Bos taurus | — | — | |
| - | 17.50sh | multi | Ovis aries | — | — | |
| - | 20sh | multi | Dog Canis lupus familiaris | — | — | |
| - | 25sh | multi | Felis domesticus | — | — |
2000, Apr 13 Marine Turtles (2000) (5 stamps)
| - | 17sh | multi | Dermochelys coriacea | — | — | |
| - | 20sh | multi | Chelonia mydas | — | — | |
| - | 30sh | multi | Eretmochelys imbricata | — | — | |
| - | 47sh | multi | Lepidochelys olivacea | — | — | |
| - | 59sh | multi | Caretta caretta | — | — |
2007, Dec 13 Nairobi Arboretum 100th issue - trees (2007 Kenya)
| - | 25.00sh | multi | Cape Chestnut | — | — | |
| - | 65sh | multi | Bhutan Cypress | — | — | |
| - | 75sh | multi | Nandi Flame | — | — |
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