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Desc: 20db
Currency: São Tomé and Príncipe dobra (100c=1db=1d)
Numerical sorting value: 120000
Equivalent denoms: 20d (9)
Users of this denom: St. Thomas & Prince Islands (52 stamps, 1978-2010)
Used by 52 stamps of St. Thomas & Prince Islands: (See all uses as list)
5/25/1978 20db issue=Nobel Peace Prize Awards to International Organizations d=++on=20c
5/25/1978 20db issue=Nobel Peace Prize Awards to International Organizations d=++on=20c
11/1/1978 20db issue=2nd International Stamp Fair perf=Printed
6/13/1980 20db issue=100th Anniversary of the Death of Rowland Hill perf=Printed
11/28/1981 20db issue=Royal Wedding 1981
12/10/1981 20db issue=100th Anniversary of the Birth of Pablo Picasso / International Year of the Child perf=14
12/10/1981 20db issue=100th Anniversary of the Birth of Pablo Picasso / International Year of the Child perf=14
12/24/1982 20db issue=2nd Anniversary of Meeting of J.M.L.S.T.P. perf=13.5
9/16/1983 20db issue=200th Anniversary of Aviation d=zeppelin (1929) perf=14
9/16/1983 20db issue=200th Anniversary of Aviation d=balloon (1798) perf=14
9/16/1983 20db issue=200th Anniversary of Aviation d=Montgolfiere (1783) perf=14
12/28/1983 20db issue=Cars 1983 dt=cars (1983) d=Mercedes Simplex (1902) perf=14
12/28/1983 20db issue=Medicinal Plants 1983 dt=medicinal plants (1983) d=Mimosa pigra perf=13.25
12/28/1983 20db issue=Cars 1983 dt=cars (1983) d=Mercedes (1924) perf=14
12/28/1983 20db issue=Cars 1983 dt=cars (1983) d=Mercedes (1936) perf=14
12/28/1983 20db issue=Cars 1983 dt=cars (1983) d=Mercedes (1927) perf=14
12/30/1983 20db issue=1983 dt=birds (1983 St. Thomas & Prince Islands) d=Dendrotreron thomensis perf=13.25
12/30/1985 20db issue=Flowers 1985 dt=flowers (1985 St. Thomas & Prince Islands) d=Helianthus annuus (1985) perf=11.75x12
11/2/1986 20db issue=Railways 1986 dt=Railways (1986) perf=13.25
11/21/1986 20db issue=International Year of Peace d=Albert Luthuli perf=13.25
12/25/1986 20db issue=Christmas 1986 perf=13.25
10/15/1987 20db issue=Plants and Animals 1987 dt=plants and animals (1987) d=Agapornis personata (1987) perf=14
10/15/1987 20db issue=Plants and Animals 1987 dt=plants and animals (1987) d=Guzmania lingulata (1987) perf=14
10/15/1987 20db issue=Plants and Animals 1987 dt=plants and animals (1987) d=Zerynthia polyxena (1987) perf=14
10/15/1987 20db issue=Plants and Animals 1987 dt=plants and animals (1987) d=Canis familiaris (1987) perf=14
10/30/1987 20db issue=10th Anniversary of Institute for Sports perf=14
11/3/1987 20db issue=500th Anniversary of Discovery of America in 1987 perf=14
11/3/1987 20db issue=500th Anniversary of Discovery of America in 1987 perf=14
12/1/1987 20db issue=Locomotives 1987 dt=locomotives (1987 St. Thomas & Prince Islands) d=Baldwin locomotive perf=14
12/20/1987 20db issue=Christmas 1987 perf=14
10/26/1988 20db issue=Medicinal Plants 1988 dt=medicinal plants (1988 St. Thomas & Prince Islands) d=Leonotis nepetifolia (b) perf=14
10/26/1988 20db issue=Fungi 1988 dt=Fungi (1988) d=Clitocybe geotropa perf=14
12/15/1988 20db issue=125th Anniversary of International Red Cross d=Airmail
10/15/1989 20db issue=Orchids 1989 dt=orchids (1989 St. Thomas & Prince Islands) d=Cattleya granulosa perf=14
10/15/1989 20db issue=Orchids 1989 dt=orchids (1989 St. Thomas & Prince Islands) d=Dendrobium phalaenopsis (1989) perf=14
10/15/1989 20db issue=Hummingbirds 1989 dt=hummingbirds (1989 St. Thomas & Prince Islands) d=Lophornis adorabilis, Chalcostigma herrani perf=14
10/15/1989 20db issue=Hummingbirds 1989 dt=hummingbirds (1989 St. Thomas & Prince Islands) d=Topazza pella, Sappho sparganura perf=14
10/15/1989 20db issue=Hummingbirds 1989 dt=hummingbirds (1989 St. Thomas & Prince Islands) d=Petasophora anais perf=14
10/24/1989 20db issue=World Cup 1990 in 1989 perf=14
10/27/1989 20db issue=Ships 1989 dt=ships (1989 St. Thomas & Prince Islands)
10/27/1989 20db issue=Locomotives 1989 dt=locomotives (1989 St. Thomas & Prince Islands) perf=14x13.75
10/27/1989 20db issue=Locomotives 1989 dt=locomotives (1989 St. Thomas & Prince Islands) perf=14x13.75
10/27/1989 20db issue=Ships 1989 dt=ships (1989 St. Thomas & Prince Islands)
10/27/1989 20db issue=Ships 1989 dt=ships (1989 St. Thomas & Prince Islands)
10/27/1989 20db issue=Ships 1989 dt=ships (1989 St. Thomas & Prince Islands)
10/27/1989 20db issue=Ships 1989 dt=ships (1989 St. Thomas & Prince Islands)
12/20/1989 20db issue=Butterflies 1989 dt=butterflies (1989 St. Thomas & Prince Islands) perf=14
12/20/1989 20db issue=Butterflies 1989 dt=butterflies (1989 St. Thomas & Prince Islands) perf=14
12/20/1989 20db issue=Butterflies 1989 dt=butterflies (1989 St. Thomas & Prince Islands) perf=14
12/20/1989 20db issue=Butterflies 1989 dt=butterflies (1989 St. Thomas & Prince Islands) perf=14
(plus 2 more) (See all uses as list)
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