From the original in the museum of the Brussels Conservatoire.
This is a three-keyed bassoon, though a G#/Ab key is normally added without violating tradition of the period. The result is an instrument very well suited to playing the baroque repertoire. Expressive and characterful tone qualities, with consistent tuning and easy response.
A=415Hz.
Stained maple 
At the work bench
Mathew Dart Bassoons 