Stamps with this color combination:
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Description: gray blue & green
Abbrev: graybl&grn
Used by 2 stamps: (See all uses as list) Papua New Guinea postage 1925 10sh issue=1919 d=lakatoi redrawn wmk=crown & A sideways Trieste Zone B postage 7/31/1953 15din issue=38th Esperanto Congress unwmk |