With Patek Philippe Extract from the Archives confirming production of the present watch with silvered dial, applied gold hour markers and tachometer scale in 1944 and its subsequent sale on 15 November 1945.
Reference 530 was introduced to the market in 1937 and is one of Patek Philippe's rarest chronograph models, the majority cased in yellow gold, few examples in pink gold or in stainless steel. This celebrated model is the larger version of the better known reference 130, Patek Philippe's classic chronograph retaining the timeless Calatrava design. However, reference 530 stands out by its impressive diameter overshadowing its smaller "sister model" by a substantial 4 mm. The yellow gold and the stainless steel models of this reference are known to have been made with two different bracelet widths between the lugs (19 mm. or 21.5 mm.), the wider version, such as the present watch, being more coveted by collectors.
Reference 530 is certainly one of the most exclusive and attractive collector watches a connoisseur can aspire to. Examples of such high quality, like the present one, are considered trophies and offer everything watch collectors define as paramount: style, mechanics, exclusivity and condition.
This example here is a particularly appealing member of the "five-thirty"-family as it features a highly unusual dial fitted with both a telemeter and tachometer scale. Research shows that it is the only example known with such a scale. The full bodied case retains very good proportions and sharp edges, in particular to the bezel. Lastly, the hallmarks are of very high quality and quite to one's surprise one of them is placed on the band on the right side, adjacent to the upper chronograph pusher aperture.
Reference 530 is illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, second edition, p. 265.