Identifying Ektachrome "EH"

[Photoemulator]

I have a roll of 120 film we all know as Ektachrome, but the letters are "EH". There's no film speed or other markings that is helpful for me to figure out even if it's daylight or tungsten. Does anyone have old information about how Kodak designated their films? Like the codes found at https://125px.com/docs/techpubs/kodak/ppi668-2002_12.pdf

 

[MattKing]

Moved to the Color film sub-forum.
When you refer to "EH", is that on a box, on backing paper, or in the edge codes?
Also, I'll update thr thread title.

 

[cowanw]

Imported to Canada, I guess, Eh!

 

[AnselMortensen]

It's very old, process E3 or E4.
Ektachrome High Speed, early 1970's.