1964 HIGH VALUE PACKET SERVICE/£1 CASTLE ISSUE. Linen parcel tag (usual creasing) sent registered mail with red "HVP" label with 9d Wilding and £1 Castle (one short perf) from London to "BANK OF SCOTLAND...EDINBURGH" cancelled "REGISTERED" oval datestamp s with "BANK OF SCOTLAND" receivers datestamp 2.MAR.1964. Very scarce commercial usage of the £1 Castle. (Ref 77648).