A 1977 Rolls-Royce and Bentley Motors presentation 50 Year commemorative sterling silver salver

A 1977 Rolls-Royce and Bentley Motors presentation 50 Year commemorative sterling silver salver,
hallmarked Sheffield, 1977, by Roberts and Dore Ltd, and with Queen Elizabeth II Silver Jubilee mark, silver salver raised on three feet, bearing Rolls-Royce emblem and further engraved 'To commemorate 50 years association with ROLLS-ROYCE and BENTLEY MOTOR CARS - DUTTON-FORSHAW (PRESTON) LIMITED - 26th October 1977', presented to the head of the Preston based main Rolls-Royce dealership, the salver 25.5cm diameter.