Patek Philippe, Ref. 425 "Tegolino". Made in 1940s. Fine and rare, rectangular curved, gold wristwatch with black dial.
Case: Two-body, polished and brushed, straight lugs, snap-on case back, inclined faceted crystal In yellow gold. Sharp and thick case with Hallmark
Dial: Black with yellow gold indexes, subsidiary dial for the seconds. Yellow gold Dauphine hands.
Movement: Patek Philippe caliber 9"90, Rhodium plated, fausses cotes decoration, 18 jewels, straight-line lever escapement, monometallic balance with screws, adjusted to heat, cold, isochronism and five positions, self-compensating blued steel over-coiled balance spring, micrometer regulator.
Dial, Case and movement signed
Dimension: 42mm X 20mm thickness: 9mm
Sometimes nicknamed the “Tegolino” (a famous Italian rectangular cake), the Patek Philippe ref. 425 production started in the mid 1930s and ended in the late 1950's. This particular version of the ref. 425 “Tegolino”, made during the Second World War is rare thanks to its black dial, yellow gold and long "Patek Philippe & Co." signature on the Stern Frères dial. The cases for the 425 were made by Markowsky and are slightly curved so to be comfortable on the wrist of the wearer.
The 9'90 Patek Philippe movement was a tonneau shaped movement introduced in 1934 which was made for 40 years and fitted many famous Patek Philippe watches such as the "Banana" (ref. 2442), the "Eiffel Tower " (ref. 2441), and the "Tegolino".
This particular watch has a well preserved case which seems to have never been polished with trace of the original sticker on the back, strong hallmark on the side of the case. The dial has little discoloration and markers have some patina.
A similar watch, lot 27 was sold at Christie's in Geneva in May 2018 for CHF 38,750. The catalogue entry can be found here