LESOTHO, 1981, 1s-5m Birds, Progressive Trial Colors (321-334 vars).
Cplt. set of fourteen values, being in blocks of four with sheet-margin on one side, a few with partial inscription, each value with five progressive states of color trials, also incl. two sets of imperforate blocks, one set of imperforate pairs (1m is two singles), and the regular issued set, Very Fine
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