Stamps with this color combination:
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Description: gray & dark blue
Abbrev: gray&dkbl
Used by 4 stamps: (See all uses as list) Argentina postage 11/21/1959 1p d=stamp 1859 unwmk Colombia airmail 7/29/1960 1p issue=Inauguration of Eldorado Airport wmk=REPUBLICA DE COLOMBIA perf=12.5 Peru postage 3/1/1974 6s d=Peruvian Philatelic Association 25th unwmk El Salvador airmail 2/14/1952 25c issue=1950 constitution unwmk |