Some time during the end of January or the beginning of February, I expect to get delivery of this Selmer Paris Modele 67, low-C bass clarinet. I’ve been working mightily on my Leblanc Paris low-Eb bass clarinet and have finally made headway in the clarion range (mid-range) notes with the purchase of a Walter Grabner mouthpiece. This instrument, more than any I have tried to date, is very mouthpiece sensative.
Here are the specs:
System: – clarinet to low C:22 keys,
articulated G sharp,E-flat lever +E-flat
to the thumb,automatic octave key.
Silver-plated nickel silver and brass keywork.
Upper and lower joints in Grenadilla wood.
Silver-plated brass bell.
Bore:-upper joint:23,5 mm.
-lower joint:23,4 mm.
2 necks:one small bent,one larger bent.
Leather pads fitted with metal resonators.
Stainless steel needle springs.
Weight:-clarinet to low E-flat:2.9 kg.
-clarinet to low C:3.6 kg.
SELMER Paris C85 120 mouthpiece.
“Light ” case.
Chuck Kessler found this for me and at an incredibly reasonable price as it is being used by Selmer the many trade shows.
The Bis Key Chronicles 
What a beautiful instrument! I hope you enjoy it. There is nothing like a fine musical instrument. We just purchased a new violin for my daughter who will be off to college next year. While at the store they offered to let her play a Stradivarius! What an experience to actually hold such a work of art. I’m sure you feel the same way about your instruments.