1855 DIE 2 PL.1 MATCHED QUARTET LETTERED AG. Two examples of the S.C.14 printing (SG24) both good used, an example S.C.16 (SG21) short perfs with Irish cancellation and a L.C.14 (Spec C6) short perfs at top but the actual stamp illustrated in the Wiggins plating book. Two show "A ROW PERF ADJUSTMENT" and all show the fine constant variety "SPOT TIP OF BUST". Very scarce matching. (Ref 96724).