
Lavrentivs's post offers a rare glimpse into a unique Patek Philippe Ref. 3448J, a timepiece commissioned for Alan Banbery, a pivotal figure in Patek Philippe's history. This article delves into the watch's distinctive 'Senza Luna' modification and its unique leap year indicator, a testament to Banbery's influence and the brand's horological artistry. Lavrentivs provides an intimate perspective on handling this significant piece, inviting readers to appreciate its historical weight.

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.
Just a spectacular piece for so many reasons you generously detail above! Thanks for sharing!
...let alone try it on. It appears that the leap year has not been set properly?
So for me, this piece is extremely interesting and desirable. I have seen pictures before and knew the story but it’s the kind of special thing that is so. Ice to be reminded of. Thank you for a great post.
I did not know such a thing existed.
For posting this! I have never seen such a clear picture of Alan’s watch. What a beauty!
This piece is very lovely and so unique ! For the seconds hand, is it hidden under the date hand in the photo ?
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