Alex, the caseback says it's a 105.003-66.
The bracelet should add about £400-500 to the total price, depending on condition. A 1039 is probably original to a 1966 watch.
For UK prices I'd say you're getting towards £3k for the watch, bracelet and box. Possibly a touch more if all the stuff we don't have pics of are very good (movement, boxes, bracelet).
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