In February 2009 I lent my 1826 Savary jeune
bassoon to Aligi Voltan, and he liked it enough to offer me another instrument in
exchange, a Heckel bassoon made in 1891, with the serial number 3620.
The instrument was shipped on 30 April 1891. This page notes:
Early prototype back thumb bridge for C# trill key. This is an early example of a design
that would later return as a seldom used factory opinion.
Photos
These are the first photos I've taken of the instrument. Others will follow.