My blue book say's 1969-1974 42w.p.c. $400.00
Some of the old Sony's are really good, some are not so good. I am not familiar with the 6060. I would like to score one of the VFET models they made..
If you decide you don't want to do it, and it's cosmetic condition is good, let me know if you want to get rid of it..
Mike