Created exclusively for Singapore retailer Cortina Watch's golden jubilee, this smoked grey iteration of the ref. 5057 revives one of Patek Philippe's most distinctive 1990s designs with contemporary sophistication. The 36mm white gold case retains its signature triple-row hobnail bezel - an audacious flourish that commands attention despite the watch's modest proportions, its faceted surface capturing light with jewel-like brilliance.

The radially-brushed smoked grey dial reveals Patek Philippe's mastery of nuanced finishes. This monochromatic scheme modernizes the original rose gold version's aesthetic while maintaining its classic layout: subsidiary dials for moonphase with a delicate date hand circling the periphery (near 7 o'clock), power reserve (near 10 o'clock) and small seconds (near 4 o'clock).

Beneath the sapphire caseback lies the cal. 240 PS IRM C LU - a micro rotor movement shared only with the Nautilus ref. 5712. Updated with a silicon hairspring, this 2.53mm-thin mechanism continues Patek Philippe's tradition of refining rather than replacing successful calibers. The frosted commemorative engraving on the caseback maintains the anniversary significance without obstructing the view of Geneva Stripes and perlage decoration.

As both a tribute to Cortina's 25th anniversary model and a celebration of its 50th, this limited edition timepiece occupies a unique position in Patek Philippe's catalog. The soldered lugs and compact dimensions preserve 1990s design codes, while the contemporary dial finish and movement upgrades ensure its relevance today.