It is a solid-state head, so it can be used for a bass head. These are collector's items, however, so I would not bother. If I remember right, and I may not, these came with either two 15 Altec 3 voice coil speakers, and a radial horn (Most common), or four 12 speakers, probably Altecs, too. The bottoms seem much harder to find than the heads, and a big consideration of price is the condition of the units. I am a bass player, so I know a lot more about the 360, 370, and 470 models. I would not consider over a $1,000 too much for a decent set 260 head and 261 bottom (with horn). A pristine set would not be over priced at $1,500 to $2,000 - Someone will pay that much or they won't. Note: Shipping on the bottoms has caused many bottoms to be parted out and the box discarded. Grills, logos, casters, handles, etc. go for a premium price. With the price of fuel going so high, shipping will be outrageous these days on something so heavy.
However, the way to judge value from eBay is to watch over time and see what they sell for, not what they list for. Many times sellers on eBay know less about what they are selling than the average buyer of the items do. If you want what the market will bear on these items, put them on eBay and let you friend bid against who ever is shopping for vintage Acoustic gear that week. I would not want this for a bass amp, nor would I really recommend it to other, as it was designed for the sound range of a guitar (Speakers), plus the head would be too dirty for most people's tastes these days, and a much cheaper head with newer tech would probably be cleaner and better sounding as a bass head. Do some google searches on your stuff and research it a bit. Can't hurt.
(Still no spell checker here?! Aigoo . . .)
Didn't notice it was you, Dave. You know the ins and outs of eBay. Ignore that part.
(Message edited by poor_nigel on June 22, 2008)