I have a Royal Tudor gold ladies watch which I would like some information on. It belongs to my Mother and she was given it many years ago as a gift. It is very small, the diameter of the case is 15mm. It has a 9 ct gold expandable bracelet and a pretty shaped part where the strap meets the face at each side. The face is white with gold numerals. TUDOR Royal is stamped under the '12' and under the '6' is 'swiss made'.
The inside of the strap has 9 ct gold markings and also 'H.S.Ltd'.
There are no markings on the outside of the rear of the case but when it is taken off, inside the back is 'R W Co Ltd' with 'T' under this. To the lower part is a number 183386 with some tiny symbols above it. On the workings themselves is TUDOR and '17 rubies'. Inside looks clean and undamaged.
The watch generally looks in good condition but is not currently working.
Please could you tell me about this watch and what it may be worth.