A friend of mine has been given a Tudor Rolex (originally bought by his father), with original box and certificate of purchase. It was bought in 1962 - but is hallmarked Birmingham 1959. I can't find an equivalent anywhere online and wondered if anyone is able to shed any light on the model, and any idea of possible value. There's no strap and it's not in the greatest condition, pictures are below.
Many thanks in advance.