Stamps of Sri Lanka, 12 base month
51 to 100 of 256
postage
1990, Dec 26 postal service 175th issue unwmk (no perf info)
| - | 2r | multi | ||||
| - | 5.00 | multi | ||||
| - | 10.00 | multi |
1991, Dec 21 6th South Asian Association for Regional Co-operation Summit issue
| - | 1.00r | multi | .20 | .20 | ||
| - | 8.00 | multi |
1991, Dec 22 5th South Asian Federation Games issue
| - | 1.00r | multi | .20 | |||
| - | 2.00r | multi | ||||
| - | 4.00 | multi | ||||
| - | 11.00 | multi |
1992, Dec 1
| - | 2.00r | multi |
1992, Dec 1 500th Anniversary of Discovery of America by Columbus issue
| - | 1.00r | multi | ||||
| - | 11.00 | multi | ||||
| - | 13.00 | multi | "Santa Maria" | |||
| - | 15.00 | multi |
1992, Dec 10 100th Anniversary of the Birth of Dambagasare Sumedhankara Nayake Thero issue
| - | 1.00r | multi |
1992, Dec 22 50th Anniversary of University Education in Sri Lanka issue
| - | 1.00r | multi | ||||
| - | 1.00r | multi | (1993) | .20 |
1993, Dec 16 Youth and Health Campaign issue
| - | 1.00r | multi |
1993, Dec 17 100th Anniversary of Technical Education issue
| - | 1.00r | multi |
1994, Dec 7 50th Anniversary of ICAO issue
| - | 10.00 | multi |
1994, Dec 8 Christmas 1994 issue
| - | 1.00r | multi | ||||
| - | 17.00 | multi |
1994, Dec 19 50th Anniversary of Sri Lankan Association for the Advancement of Science issue
| - | 1.00r | multi |
1994, Dec 24 100th Anniversary of Richmond College Old Boys' Association issue
| - | 1.00r | multi |
1994, Dec 27 60th Anniversary of Orchid Circle of Ceylon issue
| - | .50 | multi | Dendrobium maccarthiae | |||
| - | 1.00r | multi | Cottonia peduncularis | |||
| - | 5.00 | multi | Bulbophyllum wightii | |||
| - | 17.00 | multi | Habenaria crinifera |
1995, Dec 8 10th Anniversary of South Asian Association for Regional Co-operation issue
| - | 2.00r | multi | ||||
| - | 2.50r | multi | (1998) |
1996, Dec 2 Christmas 1996 issue
| - | 2.00r | multi | Murals Trinity College | |||
| - | 17.00 | multi | Murals Trinity College |
1996, Dec 12 UNICEF, 50th Anniversary issue
| - | 5.00 | multi |
1998, Dec 7 50th Anniversary of Department of Meteorology issue
| - | 2.50r | multi |
1998, Dec 10 Christmas 1998 issue
| - | 2.50r | multi | ||||
| - | 20.00 | multi |
1999, Dec 3 famous people (1999) wmk. SPM multiple
| - | 3.50 | multi | Sunil Santha | — | — | |
| - | 3.50 | multi | Dr Pandithamani S Kanapathipillai | — | — | |
| - | 3.50 | multi | Dr. Al Haj Badiudin Mahmud | — | — |
1999, Dec 12 paintings (1999 Sri Lanka) unwmk
| - | 3.50 | multi | by David Paynter | — | — | |
| - | 4.00 | multi | by Justin Daraniyagala | — | — | |
| - | 17.00 | multi | by Ivan Peries | — | — | |
| - | 20.00 | multi | by Solias Mendis | — | — |
1999, Dec 30 butterflies (1999 Sri Lanka)
| - | 3.50 | multi | Striped albatross | — | — | |
| - | 13.50 | multi | Ceylon tiger Parantica taprobana | — | — |
1999, Dec 30 Athletic accomplishments
| - | 13.50 | multi | International fame in track & field | — | — |
1999, Dec 30 butterflies (1999 Sri Lanka)
| - | 17.00 | multi | Three-spot grass yellow Eurema blanda | — | — | |
| - | 20.00 | multi | Great orange tip Hebomoia glaucippe | — | — |
2000, Dec 1 38th Anniversary of Medicina Alternativa issue
| - | 13.50 | multi |
2000, Dec 7 100th Anniversary of Ladies' College, Colombo issue
| - | 3.50 | multi |
51 to 100 of 256