13x18cm Sinar Norma Planfilm Kassettes

[Daniel Unkefer]

https://live.staticflickr.com/65535/50590189331_7776f30f48_z.jpg (https://flic.kr/p/2k5tWKD)Sinar Norma 13x18 Planfilm Kassette (https://flic.kr/p/2k5tWKD) by Nokton48 (https://www.flickr.com/photos/18134483@N04/), on Flickr

Anybody here know anything about these Norma era Sinar holders? These are 13cmx18cm Sinar Norma Planfilm Kassettes.
Any idea who made them? These held E-3 50 ASA film now that would be something to find.

Loaded with Fuji HRU XRay film these will make nice sized contact prints.

[Drew Wiley]

That was presumably old-style Agfachrome 50? My brother once shot a lot of that in 4x5, and I printed certain shots for him. It had a unique look. I last shot it in the mid 70's. Agfa had their own dedicated process lab for it in the US back then.