1957 'HVP' PARCEL FRONT LONDON TO HYTHE KENT/5S AND 10S CASTLE ISSUE. Large part parcel front (277 x 158) sent registered mail using the 'HVP' (High Value Packet) Royal Mail service from Barclays Bank Lombard Street to Barclays Bank Hythe Kent. On front 1d Wilding, 5s Castle (faults) and fine 10s Castle tied slightly heavy strikes REGISTERED/LONDON date stamps 6 AUG 57. Stamps perfinned 'B/Bk'. Scarce survivor. (Ref 118462).