This is a piece of 16mm that was sent to me by Warton Parfitt; there was no description with it. I have never seen a 16mm Cyan print before.

Hi Robert, there are some filmstocks that instead of going red, take another route to fade by going purple and I'm sure other shades were mentioned too, one of the stocks was an early Fuji that went an odd colour and suffered from "Fuji rot". That name Warton
Parfitt certainly conjures up memories, his lists were an Aladdins cave of cine related treasures, and in the case of your piece of film,
mysteries too.

He sent me a piece of film with a Cyan soundtrack. I believe Fuji goes green/blue. Hw would put bits in with orders, but nothing in the way of explanation, except for the Cyan soundtrack. He was a gentleman of the old school. Not a get rich quick merchant.

You have just jogged a memory there Robert, he sent me some 35mm film with soundtracks on over the picture area, magnetic, I'm thinking now where the hell did I see them last