I am selling my 73 tx650 that i just finished restoring its the nicest one that i have ever seen take a look for your self:
http://cgi.ebay.com/ebaymotors/1973-YAMAHA-TX650-ALL-ORIGINAL-SHOWROOM-CONDITION-/200918365974?pt=US_motorcycles&hash=item2ec7aaf716
Here is a video i did of the bike: