This is one of those very understated pocket watches where the dial gives no clue as to what is inside and inside is what makes this rather special! Originally it was probably sold as a chronometer with its 4 screw fixed gold chatons and snail regulator. See the pictures. Today, some 90 years later, it runs about 20 seconds per day fast and even this could probably be improved upon with a service.
 
Identified as a Revue pocket watch, it comes from a long-established Swiss watch manufacturer. It has a two-tone white porcelain dial and there are no visible hairlines or repairs. It has Roman numeral hour indexes with a rail track outer. Blued steel Poire hands with small seconds dial at 6. 
 
The case is English-made by the highly respected Dennison case-maker. It's fully hallmarked as is the dust cover. There are no significant dinks or scratches. The central cartouche is blank. The case has a coin edge and the lack of wear to this and the crown suggests that it has seen little use.
 
As mentioned earlier the movement inside is superb.