dial artist

(名詞/可數) 錶面藝術家 - 收費來為手錶的表面進行彩繪、雕刻等以使錶面具有獨特圖案的人。

It's hard to escape the current trend for personalisation … And now watches have got in on the act. When it comes to watch customisation there are two distinct routes: either go official and buy from a brand that is already offering the service, or go rogue and purchase from dealers and "dial artists" who can reinvent your Rolex and pimp your Patek so it's truly a one-off.
[thetimes.co.uk, 21 November 2021]