What mark series is this? ebay content

[chevy Z 302]

http://cgi.ebay.com/MESA-BOOGIE-100-WATT-SIMUL-CLASS-REVERB-EQ-LOADED-WOW_W0QQitemZ330088952180QQihZ014QQcategoryZ43374QQrdZ1QQcmdZViewItem

just browsing and saw that, i dont know how to tell or what to look for so if you feel generous and want to tell me how you came to the conclusion that would be great but i just wanted to know what it was.

 

[phyrexia]

I saw that. It's a III. You can see it on the back of the chassis on one of the pictures. I don't see a stripe or a dot or anything though.