How do I know if my Bassoon is a 220 or a 240?

I got my bassoon about 8 years ago and it's a Fox Renard, but I can't for the life of me remember if it's a 220 model or a 240. I know the long/short bore slight intonation difference, etc... but is it written anywhere on the instrument? I want to be sure before I try to sell it!