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 from London to "BANK OF SCOTLAND...EDINBURGH" cancelled "REGISTERED" datestamps with "BANK OF SCOTLAND" receivers datestamp 16.MAR.1964. Scarce commercial usage of the £1 Castle. (Ref 77645).
