United States Covers
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By Franking
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- Slogan Cancel (5292)
- Spray-On Cancel (126)
- U.S. A.P.O.'s (1260)
- U.S. Flag's (1817)
- U.S. Marine Corps (58)
- U.S. R.P.O.'s (1549)
- U.S. Ships (3986)
- United States First Day Cover (6451)
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- Washington Bicentennial Event (877)
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