I have an old clarinet with no serial number seen. It is made of wood and a 'Henri Selmer Paris' emblem stamped on the bell and barrel. Small digit '31' can be seen near the joints (both lower and upper joints). Anyone can identify this series?
TQ

If it is a Selmer there ought to be the logo at the top of the upper joint as well & serial numbers on the main body parts. My guess is that the two main parts are some other lesser make with Selmer barrel & bell.

Thank you very much!