A very pretty and unusual silver gilt and blue guilloche enamel sub miniature carriage or boudoir clock by Eterna. Very pretty blue guilloche enamel in superb condition with engine turned patterns, the front with overpainted white roses. The unusual square dial with superbly patterned bezel, the gilt dial with arabic numerals and blued steel breguet half moon hands. The back of the clock, with fine engine turned design, is stamped with Swiss silver rampant bear mark, numbered 72619 and 0.935 silver content mark. The inside back door further with these marks plus Argent dore mark. The fine 8 day, 3 quarter plate movement. Swiss circa 1915. 5.5cm High by 3.3cm Wide and 2.2cm Deep