Advice regarding authenticity

[1340jas]

Please look at the attached link

http://cgi.ebay.co.uk/ROLEX-W-D-wris...item1c14022ce0

Description:

You are bidding for a Ladies Rolex W&D wristwatch. The watch case is made of gold and is hallmarked. The watch strap appears to be made of a brass type material. This may not be the original strap. The diameter of the watch case is 1 inch exactly and it is 3/8ths of an inch in thickness. The watch has a hand winding button, but the item is not working. The face consists of a silver finish with the numerals in black. There is a second hand which is located at the bottom centre of the dial. This rotates within it's own circular dial which is marked 10-20-30-40-50-60. Each of the back and front covers are hinged to open. Within the back cover I can see the name ROLEX beneath is stamped, 9 in a diamond shape with the number 375 beneath that, At the bottom are the letters W&D and SWISS.

The watch is stamped with the following number:- 1140103. I believe this watch type was the forerunner of the famous ROLEX brand.

You may gather that I know nothing about watches. This item once belonged to my late Father in law. He was a Jeweller for about thirty years before passing away during the1950's. I have attempted to describe the watch to the best of my abilities. If you require more photographs, I can obtain them for you. Please email me for any further information.