1947 - 1981 20c C-rate Eagle, coil - Mystic Stamp Company
1946-48 - 1981 C Rate Change, set of 3 stamps - Mystic Stamp Company
Scott#: 1946 - C Eagle 20¢ 1981 Single Stamp MNHOG
US Stamps - Postage issues for sale
1947 - 1981 20c C-rate Eagle, coil - Mystic Stamp Company
20 Cent Denomination Used US Stamps (1901-Now) for sale
SCRAP Stamp Collection – The Philatelic Foundation
O135 - 1983 20c Red, Blue and Black, Official Mail, coil - Mystic Stamp Company
US Official Mail – Robs Stamp Shop (Curious Rob's eShop)
Official Stamps (O) Dennis R. Abel - Stamps for Collectors, LLC
1948 - 1981 20c C-rate Eagle, perf 11 - Mystic Stamp Company
US Postage Stamp Single 1982 George Washington Issue