Swiss silver fan shaped Art Nouveau pocket watch Circa 1905

Silver retrograde watch by Record Watch Co.
–
A rare Swiss silver open faced fan shaped Art Nouveau lever pocket watch with retrograde time indication, circa 1905. Comes with the original morocco presentation box. The case back is decorated with flower scroll ornaments and punched with the maker’s punch mark from Holy Frères. White enamel dial, black Arabic retrograde hours from 0 to 12, minute divisions above with black retrograde five minute numerals from 0 to 60, the quarter hours in red and blued spade hands. A frosted gilt fan shaped movement with a screw compensation balance, inscribed Brevet 27961. Dial and cuvette signed SectorWatch, movement signed Record Watch Co SA Tramelan.
–
Dimensions: 60 x 71 mm
–
Weight: 100 g
–
Signed: Record Watch Co SA Tramelan
–
It is unusual to find one of these extremely rare Sector watches in as good as new condition. No other example is known that comes with its original presentation box. 
–
This type of watch is based on Swiss patent No. 27.961, which Giovanni Sgherlino from Turin received on April 9, 1903. A group of watchmakers and dealers from Tramelan and Tavannes took an interest in the unusual design and registered the Record Watch Co. S.A. on December 16, 1903. The new company was based in Tramelan.