Reference 4960 is a lady's version of the acclaimed Aquanaut line of sport's watches. It was produced from 1998 to 2007, powered by the quartz calibre E19C. Already a very rare example in its standard configuration, the present specime featuring a blue dial well exceeds the rarity of its black-dialed peers as it is a special edition made in extremely limited quantities in 1998 for the Japanese market. The rarity of this model is apparent when we look at the amount of examples known from the public market: overall, only 14 examples of ref. 4960, including this one, have appeared in the 20 years since its launch. If we restrict the search to the Japanese blue dial edition, however, we are able to find only one other known example which appeared a decade ago, in 2008. This is thus the only second example of what can arguably be deemed the rarest of all Aquanaut models to make its public appearance.

The present example, offered complete of its Japanese Certificate and in excellent condition, has the added particularity of featuring both a stainless steel bracelet, and also a blue rubber strap with additional buckle, obviously a request of the original buyer at the time of purchase.