Thanks to Deone B. for the wonderful vintage ad for Ledoux clarinets!
Probable real maker: SML
Barrel: Using non-original Normandy plastic 66.4mm barrel
Bore LH joint top: 14.5mm
Bore LH joint at bottom: 14.5mm
Intonation summary: I was not able to use FMIT with this test due to technical problems. This is fantastic intonation! I play flatter than this normally with a standard 66mm barrel. I would recommend whoever gets this horn get a shorter barrel.
Key work quality: Nice sturdy nickel keywork.
This clarinet is most appropriate for: Intermediate or even advanced players. This clarinet plays as well as many older model Buffet R-13s!
Who made this clarinet? Because of the rings protecting the center tenon, I am positing that this might be an SML instrument. Because of the stamp on one key that matches the batch stamp on the body (29x), I think that this was a special production run of a limited number of instruments. The two-number plus letter stamp also is similar to other SML instruments.