Omega Chromega c760 & c67 Glass Carriers

I wanted to know if any ANR glass carriers were even out there for the c67 and c760 specifically for 6x7 and if so where?

My first enlarger was a Chromega 6X7. I only used it a year and a half before moving up to a 4x5 enlarger.
But what I used for that were Gepe 6x7 slide mounts with anti-Newton glass in them. They snap apart and are easily reusable. Sometimes those still turn up for sale cheaply if you search. There are some on EBay right now, listed as 54 X 68 mm (inside opening dimension).