I've checked through some Kodak Data books from the 1970's and 1980's; nothing I found matches. The wider notch to the left doesn't really have a Kodak "look" to it.
According to the latest F3 from Kodak, found at http://www.kodak.com/global/en/professional/support/techPubs/f3/f3.pdf , that code now indicates c-41. It is also the notch on my Ektar 100 when used alone. I would suggest looking into the old Portra ranges or if Kodak ever made Ektar 400.
I souped this today in Digibase C41. There’s absolutely nothing on it. It looks weird for C41. The backside looks black, but I cannot remove it, so not remjet? The front looks olive green and I can scrape it off. Looking through, there’s no image, and the base color is more or less dark amber as in other C41.
And there’s a marking along the edge that is not printed, it is embossed or stamped: 711 KODAK
I souped this today in Digibase C41. Theres absolutely nothing on it. It looks weird for C41. The backside looks black, but I cannot remove it, so not remjet? The front looks olive green and I can scrape it off. Looking through, theres no image, and the base color is more or less dark amber as in other C41.
And theres a marking along the edge that is not printed, it is embossed or stamped: 711 KODAK
There is no orange base colour. The orange colour that you see at (most of the current) C-41 films is the colour of the unexposed but processed emulsion.