have you looked on ebay ? there was a guy on there w/ 3 sets for sale.
I need a pair of 68 lenses or at least a r.h. that`s not broke. those things sure get brittle when their 40 plus yrs. old!
-----------------------------------------------------bob
I doubt you will find nice original 44 year old lenses. They get darker and they get spider lines and/or chips around the outer edges.
Reproductions from somewhere like Laysons may be the best route.
Good luck