I work at a music store in San Francisco. I was leafing through an old Vintage Guitar magazine just now, and saw a photograph of a 1970's Earthwood acoustic bass and immediately realized that the headstock had the shame shape as a six string flattop that is on it's second go-around in our store. We had always assumed that it was some kind of Frankenstein, based on it's odd features: bolted-on tele-esque neck, wood pickguard, upside-down bridge, etc.
A bit of poking around on the internet confirms that it is in fact an Ernie Ball acoustic 6-string guitar. There is no indication on the guitar what it is. The neck is a bit wonky, with fairly high action & it does not intonate as well as I would like. aside from that, it has an interesting tone, and looks like something that would have been crafted by someone living in a tree-house, appropriately enough. Until today I knew NOTHING about this guitar, even though I sold it once & subsequently took it back in trade a year later.