Lot 50163 – 1856-57 4d Blue used selection incl. two apparentl

1856-57 4d Blue used selection incl. two apparently unused but with cleaned pen cancels in blue and deep blue (ex Burrus); right marginal single in bright blue; seven singles (incl. pos.6 re-entry and two pre-printing paper folds), a pair and a strip of three in blue; and four singles in deep blue, odd minor faults, plus plate proof in pale blue (thin) (20) (Est. € 600/900)