I am very lucky to have this very interesting (and beautiful) copy of a 17th century English chamber organ by Father Smith (originally Berhhardt Schmidt) made twenty years ago by the famous British organ builder Robin Jennings.
The organ is made of solid oak, and the stops are:
Open Diapason 8
Stopped Diapason 8
Principal Wood 4
transposable from A = 392, 415, 440 and 466Hz
In use with Fretwork, at the Wigmore Hall.
It gives me a lot of pleasure if folk use this lovely chamber organ, but best to know that I have absolutely no idea how to tune it!
Definitely a job for a specialist.