[1991 Les Paul]

The guy has the original pickups too.

There are 2 things that I'm not so sure about:
1) He's selling it as Les Paul Classic.

2) The serial Number. The body says January 1991, the serial number makes me think of 1992. 

[1991 Les Paul]

Hello!

I'm looking to buy a '91 Les Paul, but I don't know nothing about this model.

Can you tell me something about it from the pictures posted here:

https://imgur.com/a/RRgz2vN

Thank you!!!