Cool Mesa Cab

I came across this cool looking Mesa Boogie cab, and I wanted to post some pictures to see if anyone knows what model it is, and/or has any opinions on the sound quality. The top 2 speakers are Celestion C90 Black Shadows, while the bottom 2 speakers are Celestion Vintage 30s.

Front-
http://i273.photobucket.com/albums/jj209/adam_l79/amps/3nf3k63pf5T55Sd5R199q67ae3de1dafc17.jpg

Back-
http://i273.photobucket.com/albums/jj209/adam_l79/amps/3m73o13le5Od5T75P599qb56bf24dc46e1a.jpg

Thanks,
-Adam