This is a prosthetic hand which seems to date to around WW1, and is one of the most beautiful pieces of craftsmanship I have ever seen. As a lover of great design and human ingenuity, I have to sit in awe of the work that went into this.
This item touches on so many things: the horrible damage that comes from war, the brilliant genius of the human mind to solve problems, the workmanship, the practicality, the attention to details -- and crosses so many timelines including the Industrial Revolution and the end of the Victorian era in England.
The maker is a company called Prothesia Ltd, from London. I have not been able to find any information about this company or this hand. I hope one of my readers can shed some light on this.