Yep, that sounds like mine...it has an attached power cord too. Thank you guys so much for the info. I called Mesa Boogie and they said the B versions started around serial #7600. Guess they're only off by 1000 or so. I've been a Boogie user for a long time. I have an old B that I bought when they sold direct that was updated to a 2C+ back in the day when the 2C+'s first came out. It still sounds great.
Thanks again for the help!