That's a 1901-1907 Thibouville, right there, because if memory serves, their next award came in 1908, and if it were after that, it would include that honor. I have an 1883, myself, and have spent WAY TOO MUCH time researching JTL. The company (family) history is actually fascinating, and they had an amazing shop. You know, the family is also well known for strings, as well.
EDIT: Golly day, that horn is clean! Don't know what you paid for it (don't tell me, please), but it's worth it at any price. Look at that beautiful keywork, and perfect alignment. That clarinet was well kept.