細節
Mobilis. A silver open face keyless pocket watch with 'tourbillon' escapment
Signed Mobilis, No. 101620. Circa 1910
The full plate gilt movement under hinged back, the three quarter plate matt silvered dial with eccentric Roman chapter ring, blued steel hands, the rotating mechanism, balance and escapement visible below the six under an ornate bridge, in engine turned case, the back centred by a plain escutcheon
53 mm. diam.