unused 1c Blue type I, IIIa (18, 22), horizontal combination pair, pos. 64, 65L12, L. stamp type I, R. stamp type IIIa, exceptionally fresh, typical plate 12 bright color, full o.g., h.r., L. stamp (type I) has a few nibbed perfs., otherwise fine, scarce, a desirable combination pair, Scott retail $1,700.00 photo est.