Patek Philippe Rose Gold Vintage Discovery
Vintage

Patek Philippe Rose Gold Vintage Discovery

By WatchFan1 · May 19, 2025 · 24 replies
WatchFan1
WPS member · Patek Philippe forum
24 replies3678 views4 photos
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WatchProSite author WatchFan1 embarks on a fascinating horological investigation, utilizing advanced material analysis to determine the true metal composition of a recently acquired Patek Philippe Ref. 3448. This deep dive into vintage Patek Philippe metallurgy highlights the nuances of precious metal alloys and the challenges collectors face in authenticating rare timepieces. WatchFan1's meticulous approach provides invaluable insights for anyone interested in the subtle distinctions of vintage gold cases.

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While I know that the ultimate answer will be received from Patek Service and Archive folks, I took the watch to a local well known jewelry store that does a lot of buying and has a huge *buy department* with experts in metals and stones. They do XRF Thermal Analysis non-invasive testing on all precious metals.

I opted to do this, since this was recommended by one of the other members here, in my previous thread, once the watch arrived late last week.
www.watchprosite.com

Before they even ran the test, their two senior buyers chuckled when I asked them "if the watch is yellow or rose", since they both instantly thought it was a rose gold watch. Their machine that uses the non-invasive technique (no sratching off a sample) is not calibrated to give exact readings for other, non precious elements, but they told me that the reading was:

- 75% gold, 20-24% copper + small percantage (not measurable by their device) of "other" elements. If that is the case, this percentage of cooper makes me believe that my eyes did not lie, when I thought it was RG as well....especially when placed rught next to a YG watch. While a vintage gold case could show some minimal external tarnishing, those hands on 3448 just look so much much darker to me, next to 5490-J.

It will be interesting to see how PP will ultimately label it.









About the Patek Philippe Perpetual Calendar Ref. 3448

The Patek Philippe Reference 3448 is notable as the brand's first self-winding perpetual calendar wristwatch. Introduced in 1962, it marked a significant technical advancement for Patek Philippe, combining the convenience of an automatic movement with the intricate perpetual calendar complication. This reference established a new standard for complicated wristwatches and laid the groundwork for subsequent automatic perpetual calendar models. It was produced for over two decades, demonstrating its enduring appeal and technical success.

The watch features an 18k yellow gold case with a diameter of 37.5 mm, housing the automatic caliber 27-460 Q. This movement provides a power reserve of approximately 40 hours. The dial is champagne in color, protected by a sapphire crystal, and the watch offers a water resistance of 30 meters. The bezel is polished, complementing the overall classic design of the timepiece.

Reference 3448 is highly regarded by collectors for its historical significance as Patek Philippe's inaugural automatic perpetual calendar. It appeals to those who appreciate the blend of traditional watchmaking with technical innovation. The model was primarily produced in yellow gold, with very few examples in white gold, rose gold, or platinum, making those variants particularly rare. Its production run concluded in 1985, solidifying its place as a key reference in the history of complicated Patek Philippe wristwatches.

Specifications

Caliber
27-460 Q
Case
18k Yellow Gold
Diameter
37.5 mm
Dial
Champagne
Water Resist.
30m
Crystal
Sapphire

Key Points from the Discussion

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The Discussion
SE
seabas132
May 20, 2025

Please please keep us posted. Glad my suggestion could help. First, XRF is extremely accurate. The Thermo Fisher XRF gun that they used (thanks for including the picture) is from a gold standard manufacturer of precise scientific instruments and not some cheap Amazon knock off. (My wife is a research doctor that runs her own research lab - so I can assure you knows a thing or two about these). With over 20% copper and no real silver component, it would be beyond unbelievable that this would be y

QU
quattro
May 20, 2025

But, most of all, how beautiful the 3448 is, and your example, is beyond words for me. Congratulations again and again on this acquisition. Best, Emmanuel

PA
PaddyP
May 20, 2025

It’s 100% stunner!

CO
COUNT DE MONET
May 20, 2025

And the FPJ is not 50 years old.

WA
WatchFan1
May 20, 2025

There are big differences between 18k RG watches from different manufactures. And RG FPJs are much warmer in general..... the overall look is further exaggerated here, because that FPJ also comes with a complete rose gold blasted dial. Per my experience, there are also differences between RG models made from the same maker but were made longer time apart (Breitling is very known for this) I have several RG watches in my collection and for example Rolex and AP watches are significantky more 'red'

JA
Jay (Eire)
May 20, 2025

If it turns out to be rose gold that will be some story.

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