Did Technicolor manufacture their own film stock for dye-transfer (IB) printing? I'm looking it up, I can't find any info.

Also, the Eastman edge code info is in white on a gray strip, leading me to believe it's not actually on the print stock itself, but printed in from an earlier negative generation. After all, even IB Technicolor prints were made from Eastman negative. (The square indicates that the film stock comes from 1977 - but if I'm correct and it comes from the negative and not the print itself, who knows when this print came from?)