Where to get a watch replated?

Only one place. They were in Montreal, Canada.

https://www.replateit.com/

They do spectacular work.

They may be in the process of moving right now. The link I gave you shows a California address.

Canuck knows.

The watch shown by @Duracuir1 is a “Canadian” cased Rolex from the early 1940s. At the time, the Canadian branch of Rolex was given a lot of latitude regarding how they cased their movements. So about half the Rolex watches that we run into from that era in Canada, are in domestic (not Swiss) cases. At that time, Rolex was selling Rolex, and Oyster watches. We associate Rolex and Oyster as being one and the same, today. But that was not the case 80 years ago. Oyster watches from the era are pretty well always in Oyster cases. In Canada, unless the dial says ROLEX OYSTER, Rolex watches could have come in a variety on non-Oyster cases. Mostly chrome plated, or gold plated, neither of which would have come out of Switzerland.

Fast forward to the origin of TUDOR as a sub brand of Rolex. Some time in the late 1940s or early 1950s, Rolex seems to have decided they could get a lot more mileage out of the Oyster name by using the name not as a subsidiary brand to the Rolex. But to establish TUDOR as the sub brand, and use the Oyster name on Tudor, and Rolex, both!

Check this article out, currently running in a thread about an Oyster Commander.

https://montrespubliques.com/1minute-reads/the-rolex-oyster-commander

One comment I would make on that article is that the Oysters sold by Eatons were not called OYSTER AQUA (as per the article), but SOLAR Aqua. The Solar name was a house brand name Eatons used on their own watch lines. Solar AQUA was only used on watches produced for them by Rolex.