PL.173 (AC AD BC BD) (SG17) STATE TWO MINT BLOCK OF FOUR FINE LARGE PART ORIGINAL GUM. A good unused block of four 1854 pl.173 S.C.16 (SG17) lettered AC AD BC BD ALL IN STATE TWO, some perforation separation and priced as singles rather than a block of four. Some slight toning on reverse otherwise fine LARGE PART ORIGINAL GUM. Attractive multiple. (Ref 88801).