Thanks for the tips, guys. That speaker cabinet is exactly what I want (although that is not the original speaker; but you can buy Black Beauties from Mesa's website). I hope this guy has some secure way of selling / shipping items to people who don't live near him.
I'm looking to buy a speaker cabinet for my Son of Boogie. This is the only photo I've ever seen of one. Does anyone know how I can acquire one of these?