The piano tuner has got back to me after reviewing the photographs of the piano I sent him. In fairness, he seems to be able to tell a lot from the photos. This is what he said:
Thanks for your photos.
Sadly your piano, which is at least 150 years old, is in a very distressed state. It is a wooden frame piano with a sticker action, that has the moving parts glued into position. This will make servicing the action almost impossible. In addition, it has had some moth infestation which have been nibbling on the felts and leathers over the years. The missing ivory keys can be replaced but not matched to the others.
However, all the above issues that I can see, pale into insignificance because of the broken strings and the oblong tuning pins. At the very least the piano needs restringing, a replacement set of tuning pins which would have to be specially manufactured and this piano does not justify any investment to try and improve it.
Finally, due to the age of the piano, we would expect to find significant weakness in the original timbers and possibly it may have had a woodworm problem during its life.
I particularly enjoyed “pale into insignificance”. I think I will call him and say that it doesn’t have to be perfect, just alright and can he do anything for me. Do you have any advice, internet?