I should also note that in the 1970's as I remember there were Framus flats , Guild flats, and Pyramid Gold flats. All of these as I remember had a similar vibe, sound and feel to them. Of these three, Pyramid Gold Flats are still available and are the only ones of this vibe /feel that are still available that I am aware of. Therefore if you are after that vibe/feel they are indeed worth getting despite their idiosyncrasies. I currently have them on my remaining modified Guild Starfire and on a Series II .
(Message edited by sonicus on September 24, 2012)