Stamps, 50b denom
1 to 50 of 583
Bolivia
postage1955, Oct 9 oil industry issue unwmk (no perf info)
| X | 50b | oil refinery |
1957, Feb 14 1957 surcharges issue ovpted
| X | 50b on 3b | bl & blk | La Gasca ordering Mendoza to found La Paz |
1957, Dec 15 railroad opening issue
| X | 50b |
1960, Apr 7
| X | 50b | brn | refugees |
1960, Dec 17 1960 provisional issue ovpted (no wmk info)
| - | 50b | on 1/2c-Sun Gate-unissued (0), Sun Gate |
1975 republic 150th b issue - presidents & statesmen unwmk
| - | 50b | multi | Simon Bolivar |
1981, May 11 1st Anniversary of 17 July Revolution issue
| - | 50b | multi |
1982, Jul 12 200th Anniversary of the Birth of Simon Bolivar issue
| - | 50b | multi |
1983, Feb 13 10th American Youth Football World Cup issue
| - | 50b | multi |
1987, Dec 16 Olympics 1988 issue
| - | 50b | multi | — | — |
1988, Dec 15 World Cup 1990 in 1988 issue
| - | 50b | multi | — | — |
2001, Mar 16 patriotic symbols
| - | 50b | multi |
2013, Sep 19 The bolivian Migrant issue
| - | 50b | multi |
2015, Jun 16 Endangered animals 2015 issue
| - | 50b | multi | harpy eagle Harpia harpyja |
airmail
1941, Aug 21 1941 air issue
| - | 50b | roselil | Mt Illimani & condor |
1950, Sep 15 Lloyd Aero Boliviano 25th issue
| - | 50b | choc | LAB plane |
1952, Mar 23 Eduardo Abaroa death 73rd issue
| - | 50b | roselil | Eduardo Abaroa |
1952, Jul 16 Isabella 500th issue
| - | 50b | Queen Isabella |
Croatia
postage1941, Aug 15 scenic (1941)
| X | 50b | slbl | Jajce |
1943, Jun 13 1943 issue
| X | 50b | bl | Ante Pavelich | — | — |
official
1942, Feb 5 1942 official issue
| - | 50b | dkgray | arms of Croatia |
Danish West Indies
postage1905, Apr 1905 issue (no wmk info)
| X | 50b | yel & gray | King Christian IX | 1.00–10. | 1.00–10. |
1908
| X | 50b | yel & brn | King Frederik VIII | — | — |
1915 p. 14x14.5
| X | 50b | yel & brn | King Christian X | — | — |
postage due
1905
| - | 50b | red & gray | numeral | — | — |
Equatorial Guinea
postage1981 martyrs issue (no perf info)
| - | 50b | — | — |
1981, Nov 20 Juan Carlos visit issue unwmk
| - | 50b |
Somalia
parcel post1923 1923 parcel b issue wmk. crown (Italy)
| - | 50B | org |
Ethiopia
postage2014, Jun 12 Churches 2014 issue (no wmk info)
| - | 50b | multi | — | — |
Gambia
1971, Jul 1 fishes (1971 Gambia) unwmk
| - | 50b | multi | Malapterurus electricus |
1973, Apr 30 Agriculture issue
| - | 50b | multi | cotton |
1974, Nov 30 Winston Churchill 100th issue
| - | 50b | multi | Churchill as Prime Minister |
1974, Dec 16 World Population Year issue p. 14
| - | 50b | multi | World Population |
1975, Jan 14 Albert Schweitzer 100th issue (no perf info)
| - | 50b | multi | Albert Schweitzer Examining Patient |
1975, Feb 18 Independence of Gambia 10th issue
| - | 50b | multi | arms of Gambia |
1975, Mar 31 African Development Bank 10th issue
| - | 50b | multi | Growth of Africa |
1975, Nov 14 Michelangelo 500th issue p. 14.5
| - | 50b | multi | Madonna of the Steps, by Michelangelo |
1975, Nov 17 Gambia High School Centenary issue
| - | 50b | multi | 100 Years High School - Coat Of Arms |
1975, Dec 15 International Women's Year issue
| - | 50b | multi | nurse Holding baby |
1976, Feb 18 11th Anniversary of Independence issue
| - | 50b | multi | golfer Addressing Ball |
1976, May 15 200th Anniversary of American Revolution issue (no perf info)
| - | 50b | multi | Continental Soldier |
1976, Oct 28 Christmas 1976 issue p. 14
| - | 50b | multi | mother & child |
1976, Nov 29 Abuko Nature Reserve issue
| - | 50b | multi | Tragelaphus spekii | |||
| - | 50b | multi | Precis hierta (1980) |
1977, Jan 12 2nd World Black and African Festival of Arts and Culture issue
| - | 50b | multi | Festival emblem & weaver |
1977, Feb 7 25th Anniversary of the Reign of Queen Elizabeth II issue (no perf info)
| - | 50b | multi | Spurs & sword |
1977, Feb 18 Tourism 1977 issue p. 14.5
| - | 50b | multi | Ruined Fort on James Island |
1977, Jul 1 1977 issue - flowers and Shrubs
| X | 50b | multi | Erythrina senegalensis |
1977, Oct 15 Banjul Declaration issue (no perf info)
| - | 50b | multi |
1977, Dec 15 400th Anniversary of the Birth of Peter Paul Rubens issue p. 14x13.5
| - | 50b | multi | Clara Serena Rubens - Rubens |
1 to 50 of 583