Product Detail

Large Silver Patent 8 Day Swiss Lever

Price : £1,100.00
Hallmarked Birmingham 1888
Diameter   71 mm         

A very large late 19th Century Swiss lever watch of 8 days duration in a silver open face case and travelling case.  Reversed three quarter plate gilt keyless movement.  Compensation balance with blue steel overcoil hairspring.  Polished steel index adjusted by removing the front bezel.  Club tooth straight line lever escapement.  Opening the back single cover reveals an open centrally placed barrel with a visible blue steel mainspring under a glass, almost the diameter of the movement, wound by a folding key.  In the centre a brass thumb wheel is used to set the hands.   Large white enamel dial with bold Roman numerals, blue steel hands.  Substantial large plain silver open face case, maker's mark "HG" in an oval.   In a fitted red morocco case lined with velvet, signs of an easel stand, now lacking.

Signed       Jacot & Bovet

Jacot and Bovet took out the Swiss patent for this mechanism (No 496) in February 1896. Although the hallmark pre-dates the patent, the case is undoubtedly original to the movement.  See Technique and History of the Swiss Watch  plate 144 for a similar watch