Airmail - Chemical Engineering Seminar 1981

Now showing: Dominican Republic - Postage stamps - 1981 - Airmail - Chemical Engineering Seminar - 2 stamps.

1981 Airmail - Chemical Engineering Seminar

18. February WM: None Perforation: 13¼ x 13¾

[Airmail - Chemical Engineering Seminar, type ACR] [Airmail - Chemical Engineering Seminar, type ACS]
No. Type D Mint Condition Unused Used Letter/FDC
1306 ACR 10C 0.26 - 0.26 - USD  Info
1307 ACS 33C 0.52 - 0.26 - USD  Info
1306‑1307 0.78 - 0.52 - USD 
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