The defining characteristic of reference 1579 is without a doubt its angled lugs: each one presents 6 facets, three on the short first part of the lug, leading from the case to the broad mid section, mirrored by three others on the second long part of the lug, tapering into a tip. This unusual and fanciful architecture was a departure from Patek Philippe's normal Calatrava-inspired chronographs of the period and is a surprising mix of strength and levity. It is so characteristic and peculiar that it has inspired a nickname for this model since the 1980s: “Spider Lugs” (originally, “Anse a Ragno”, in Italian), one of the earliest examples of watch nickname. In an exquisite show of subtlety, the angularity of the case is reprised on the dial by the faceted pyramid markers - the standard on this model since the beginning of the 1950s (1940s example usually bear baton markers) and hardly ever seen on any other Patek Philippe wristwatch. Coupled with the generous size of the case, this eclectic design rendered ref. 1579 one of the most appreciated and collectible models of the company.

In production from 1943 to the mid-60s, the model is known in yellow gold, pink gold, steel and platinum, with all cases made by Wenger (casemaker number 1, in a Key as for al Geneva makers). The total production for the model is estimated to be less than 500 pieces, a more restricted output than several current production limited edition pieces.

The present example has resided in the same collection for the past 33 years, nearly to the day: it was purchased by the current owner on October 15, 1989 at an Habsburg, Feldman auction - as documented by the accompanying Habsburg Feldman Certificate. The dedication “Clielo 8 - IX - 50” is engraved in vernacular cursive script to the back, adding charm to the ensemble.