This is all to say that the information below does not represent the last word on the respective topics. Why are adjustment screws absent from most "high-end" instruments? I can't say enough about having a great head joint...).
I bought it for $4,000 and put $660 in repairwork (I can also recommend a fantastic repairman!
In the early years at the Flute-makers Guild in London, Roberts had always been fascinated by the wooden flutes and their tonal quality.
This fascination accompanied him throughout his flute-making career.
Its origins lie in the playing and teaching of Paul Taffanel and Philippe Gaubert at the Conservatoire in Paris during the early part of this century.