Hi Alan, and thanks for the reply.
No bass ref. plates, but after some heavy duty googling I found this:
1980's Roland Cube 100 Guitar Amp. Note: This is not the newer Roland Modelling Amp. Solid State, Custom Snakeskin Tolex, 100 Watts of Power. Great amp for Classic Rock, Blues and Jazz. $250 and this legendary workhorse is yours.
http://toronto.en.craigslist.ca/tor/msg/1303818458.html