1964 HIGH VALUE PACKET SERVICE/£1 CASTLE ISSUE. Linen parcel tag sent registered mail with red "HVP" label with Wildings 3d and 1/6d pair also £1 Castle from London to "BANK OF SCOTLAND...EDINBURGH" cancelled "REGISTERED" oval datestamps with "BANK OF SCOTLAND" receivers datestamp 12.FEB.1964. Very scarce commercial usage of the £1 Castle. (Ref 77673).
