poita said:

BTW, was the Audio on the 16mm the mono mix?

My 16mm print is mono, but it is just the stereo mixed down to mono, not the theatrical mono mix.

The 16mm print used for Grande had also the theatrical Dolby Strereo mix in mono.

The real theatrical mono mix heard on Grande was actually taken from a Swedish 16mm print.

It's also the unrefined opening day print version of the film you see on Grande before the mono mix was shipped. See here: http://originaltrilogy.com/forum/topic.cfm/Print-variations-in-77-Star-Wars/topic/14705/