Hello Mrs Young
The figures sound wonderful and might have some advantages over modern figures, they may be a better quality of casting for example, as the slate moulds they are made from tend to deteriorate over the years.
Monetary value is hard to state without knowing what they are.
So I imagine the first thing to do is to try and identify them, which is not that difficult. Most will be recognisable from photos as we have a broad knowledge from members here from all around the world.
There are other ways to identify them, such as the small markings, usually letters and numbers, on the bases of the figures.
I think thats the first step, and I'm sure we would enjoy seeing them. After that we could suggest some options for you if you really want to part with them.
Hope this helps
Charles