Is it OK for sellers to invent their own Model numbers for things?

[commodores4bo]

I realize that being a collector and a Commodore history buff makes me more than a bit **bleep** about some things, but this eBay listing for a Commodore CM-141 monitor, which has been around for several months, bothers me.   He calls it a "1903", but as near as I can tell, he just made that up.   However, there's no way to tell him through Contacta, and I can't find any policy he's broken to report it, so that he can know.  Have I missed something?  Is it really OK just to make up your own Make/Model information?
 

[nowthatsjustducky]

It is likely a typo, since on both the number row and the number pad, 3 is right next to 2.

It was likely supposed to be a 1902 monitor.  Since such an explanation is so obvious, why would you think it was intentional?  Occam's Razor and all, yaknow.

[rolenboy01]

Why would it bother you so much? it's on him if he get's a SNAD over it not your problem.