Rolex 1550 with Zephyr dial - Original or not?

[K-Two]

Hello everyone,

I'm seeking some assistance from the experts here on the forum regarding a Rolex watch I own. It's a Rolex 1550/5 (gold shell), which was recently serviced through my local AD in Norway and sent to Rolex Switzerland to get the job done. The watch features a Zephyr dial, and from what I understand, the Rolex 1550/5 was not originally offered with this type of dial.

I'm unsure whether this Zephyr dial is original to this model or if it might have been retrofitted at some point. I've searched extensively online and through various sources but haven't been able to find definitive information on this issue.

From what I understand, Rolex in Switzerland usually proposes to replace or offer a quote for original parts if a watch has non-original components during service. However, I did not receive such a proposal regarding the dial during the recent service (which I did for the second hand and the date disc).

Does anyone here have insight into whether the Rolex 1550/5 was ever produced with a Zephyr dial, or is it more likely that the dial was added later? Any information or guidance you can provide would be greatly appreciated!

Thanks!

PS: The photos with leather strap are taken prior to service. Bracelet, date disc and second hand was changed after this (as seen in the other images).