Beseler enlargers neg carrier's ID code?

Just curious if anyone knows if there is a reference to Beseler's neg carriers ID numbers and letters to give one an idea of enlarger, film, glass/glassless/frame size etc. etc. that the carrier is designed for? Doesn't appear to be in any of the usual search place around the web .....
Thanks & cheers,
Sam

The Used equipment list on KHB's site has a fair number of them, with ID numbers.

Near the bottom of this page ?
http://www.oresteen.com/bess23c.htm

Here's a list for the 4x5 enlargers:

http://oresteen.com/bes 45 carriers.htm

Thanks Matt, Francois & Steve,

I was hoping to decipher the "code" but from all the links it looks to me that Beseler simply adds a unique number, in numerical order, to all their products, that does not refer to any hidden or underlying definition or attribute of the item. Curiosity resolved!
Thanks again & cheers all,
Sam