I have an older Couesnon clarinet with a PM barrel which is really too small for it. It fits on the first section with difficulty and I would like to have the correct barrel for my clarinet. You can see pictures of my "married" Couesnon here:
http://clarinetpages.info/smf/index.php/topic,1526.0.html#msg11374The Brilliant barrel I have seems to be in good condition, dark wood with a small triangle of lighter wood (sapwood?).