Dean 9 string mandolin

[Charles E.]

What is up with this thing?

http://cgi.ebay.com/Dean-9-String-F-Hole-Mondo-Mandolin-Vintage-Sunburst-/230494514217?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item35aa8b2c29

What is the extra string for? how is it tuned? :confused:

[Charles E.]

I found some older threads about this 'thing',...... movin on.

[MikeEdgerton]

It's actually a guitar if I recall.