What’s this worth……My dads watch :(

My dad passed away last year and i found a watch at the back of his drawer.

It’s a 1952 Jumbo, sweeping secondhand , raised solid gold hands and 3D markers at 3, 6, 9 12 original winder never cleaned, or polished. It just ran for 40 hours with first wind in at least 20 years. Original maroon clam shell box and beautiful warm gold patina on the dial. I am no watch expert but its seems rare to me. I researched to find out more and it’s a non-radium dial. Strap is a replacement and non correct as is the buckle. Everything else untouched. Never polished. Has original winder from 1952 with correct raised logo. Please suggest specialist to clean and oil movement with no other work/cleaning.

According to AI there may be less than 50 left in the world untouched like this and i want to preserve its history and service it without making a mistake and changing something that shouldn’t be. I am in Milton Keynes Uk

I know this is rare watch as I cannot find anything like it on the internet…….signed up for you all to help me secure a good legacy for my late fathers watch and wear it from time to time…….all advise welcome please thankyou!! I would like to understand value to ensure correct insurance value please……Not considering sale at this time but would love help please on this era of vintage Omegas and really hope you can help and advise to retain its originality and get what i suspect would be its first ever service!!

Thank-you all in advance

Tim

I just bought the original case from ebay based on AI suggestion hence the strange image. It did not have any case or pictures and believe my grandparent bought my dad this watch in 1952 as a present for doing so well at university - other than that I doing know any more information Thanks for any constructive input into its history/style and Rarity……..previous post is info fromAI by me sending it images so I just re typed what it told me about the type of watch it is ……thanks in advance