This seller is offering a cool and fairly rare Yamaha from the very early days of that company.  Think about what sort of guitars were coming out of Japan in 1966 and compare them to this nicely finished Yamaha. Interesting.  It is styling like this that make Yamaha guitars popular among retro Surf players in Cali. 
I've never played one of these but the look is unique and I am sure it plays and sounds nice as well.
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Vintage (60's) Yamaha SA-15 - $450 (abq)
Date: 2012-05-06,  4:17PM MDT
Reply to: 
vwnq2-3000049931@sale.craigslist.org [Errors when replying to ads?]
Unique styling, great feel and quality construction as to expected from 
Yamaha of this period. I think they stopped making these in the late 
1960s; however, later models have the serial number stamped into the 
fretboard (this one doesn't). I believe it to be circa 1966. Condition 
is about 7/10, some nicks and scratches, but appears to be all original 
and everything works. Almost all of these have a crack by the neck 
pocket and "stars" around the pickguard screws and this one does as 
well. This is not a cheap feeling guitar (unlike most Teiscos or similar
 from the same period), although I think it was Yamaha's entry level 
semi acoustic at the time. If you've never played a vintage Yamaha 
you'll probably be surprised. The neck is thin and slightly narrow, the 
action is medium (I've never adjusted it) but the feel of the guitar is 
great as is the vibe.
More info on this model (not this guitar):
http://guitarz.blogspot.com/2009/11/yamaha-sa-15.html
You usually see these in sunburst, the maroon ones like this are less 
common. $450 firm w/hard shell case. I doubt you'll find another one of 
these in NM. Average e-bay prices are between $600 - $1000 depending 
upon color and condition. I might trade for boutique pedals of equal 
value. Guitar trades would have to be something very different (no 
recent import guitars). I might go for a small vintage tube amp.
E-mail me back or text me at 505-***-****. No phone calls please... it's
 2012 after all. I don't think there are any questions that I can't 
answer over text, and if there were, they can certainly be answered by 
viewing and playing the guitar. 
Thanks,
Derek