Lot 50108 – Pair and single of 1/2r Blue on blue-surfaced pape

Pair and single of 1/2r Blue on blue-surfaced paper plus pair of 1r Green, all tied by great strikes of hexagonal AMBATO cancels to front of exhibit-page size wrapper to Chimbo, rate 3 1/2r for 6 oz (indicated by ms at top right), the 1r pair is pos. 65-66, with the latter showing colourless slanted line a right from value tablet to bottom of circle around Arms, an important, an important showpiece for several reasons, 1/2r single mixed margins else very fine, ex Bustamante and Saa