Welcome!
Sorry to learn of your loss. You have a sad task.
It is a very useful machine. (With myriad uses)
To learn more about your Viceroy, go to the Lathes UK website.
It will probably give some history of the company and details of the model that you have (Ptobably centre height, tapers in Headstock and Tailstock, and possibly about the graduations on the handwheels and controls.
The more that you know about the machine, and any accessories with it, hopefully, the easier it will be sell it.
The local model engineering society could advertise it on their website, and someone could give you an estimate of its value. Someone from there could help you look for any accessories, such as drills, Taps, Dies, Reamers, measuring equipment etc)
Once you have a sensible estimate, you could advertise it on the “Classilfied” part of this site; giving your approximate location(No more detaile than the town, initially), or possibly in the “free adverts” part if ME and MEW magazine.
Dealers will offer less than a private sale (They have overheads and neeed to make a living)
Hope that this is a little help
Howard