I know little about the technology of this instrument, although, I confess, I would like to own one. Why don't you send me a photo of the mechanical parts? I would like to see them. Let's see if we can find something ...or a way to make them. You will have a dimensioned project, right?
Browsing the internet I saw all the mechanical components but the costs are truly very high, can you tell me where I can find them at a price that is not too excessive?
I thank you anyway ... I will try to look for some old mechanics and remove some parts, because I would be interested in 20 action levers with hammers ...