1886/99 Plimpton and Morgan 5c Envelopes Mint Selection, includes: 1092 (3), 1093 (4), 1094 (2), 1094a, 1095, 1095a, 1097, 1098 (2), 1098a, 1099 (2), 1099a, 1100, 1101, 1102, 1103, 1363A, 1364, 1365 (2), 1366, 1367 (2), 1368, 1369, 1371, and 1373, all fresh and very fine, an attractive group