Interesting that you can date it to 1933. I have a La Bar Artiste clarinet, B-flat, which my parents purchased for me around 1959 when I was in 7th grade. It is also from Campo Brothers Musice store. That is cAmpo, not cOmpo. They were located on N. Broad st. in downtown New ORleans and a popular place for musical instruments for youths (think high school marching bands). In and of itself, the clarinet is not that valuable. I think it was popularly sold to families for their aspiring "Pete Fountain"s. However, they were well made of quality materials such as ebony wood, when many school clarinets were being made of a form of plastic - maybe something like bakelite. I did live in New Orleans but I was too young to know any professional musicians. Pete Fountain was the most well-known New Orleans clarinetist and after him everyone else was a wannabe.