number on a trombone?

Bit of a trombone question.

I have been asked to sell some of our old band instruments on ebay. we have been successful so far but we have half of a trombone that i have been asked questions about and i can't answer one of them, i was wondering if any of you can help.
The trombone is the bell section of a besson, and the number (i'm guessing it's te serial number) is 942- EXP. Does anyone know what the EXP means?

Any help would be much appreciated

 

Does it not stand for Experimental - e.g. it is a prototype besson? the number stands for the Besson Model number, it is a 942 trombone, I used to own a 940.

There was a Baritone on Ebay about 2 years ago that was a Prototype 956, and it had a name like EXP 3 or something...

 

Could it simply mean that it was manufactured as an 'export' model?

 

Does it mean that it will explode if played incorrectly?


I'll just get my coat!

 

My googling turned up zilch on this one, but someone on the trombone forum might have a clue if you posted there

http://tromboneforum.org/