Reference 3730 is one of those watches that best incarnates the ethos of the Ellipse in the 1970s. In production for about one and a half decades (1976-1990), thanks to its large 38.5x31mm size and lug-less design it allows the beholder to admire the perfectly proportioned case in all of its unabashed geometrical beauty. On top of that, it appears that the model was predominately executed with onyx dials, truly incorporating the experimentalism that is typical of the 1970s. Compounding to its mystique, the model appears to be incredibly rare: so far only 6 pieces were identified known from the market, making this previously unknown example the 7th.

In this specimen, the wonderfully preserved onyx dial creates a pitch black pool of perfect glossiness which markedly contrasts with the warm gold case for a superb aesthetic effects. The fact that the case is in condition nearly as perfect as the dial - with crisp hallmarks to the back and minor surface marks, indicating a possibly unpolished watch - is the final touch for this remarkable timepiece.