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desc_issuer: United States desc_year: 1977 desc_month: 6 desc_day: 6 desc_denom: 13c Related descs: issuer=United States-8/18/1976-13c issuer=United States-1978 Not used by any overprinted stamps. Matches 4 types: United States postage 6/6/1977 13c multi dt=butterflies (1977 United States) d=checkerspot Euphydryas phaeton unwmk perf=11 United States postage 6/6/1977 13c multi dt=butterflies (1977 United States) d=dogface unwmk perf=11 United States postage 6/6/1977 13c multi dt=butterflies (1977 United States) d=orange-tip unwmk perf=11 United States postage 6/6/1977 13c multi dt=butterflies (1977 United States) d=swallowtail Papilio oregonius unwmk perf=11 |