Thanks. Is it worth Omega servicing it? It keeps good time now. Any guesses on the guilloche dial? Factory?
If it hasn't been serviced in the last ten years it needs it now. Lubricants will have degraded and running the watch may cause undue wear on increasingly hard to get parts.
The dial would have been made by a specialist dial company for Omega, at that time Omega did not have in-house case/dial production capability.