How old is a Besson Westminster clarinet number 170019?

To determine the age of a Besson Westminster Clarinet with the serial number 170019, you would typically need to refer to Besson's production records or serial number charts. However, Besson clarinets were produced mainly in the mid-20th century, so a clarinet with that serial number could be estimated to be around 60 to 70 years old. For a precise date, consulting a detailed reference or contacting a Besson expert would be advisable.