poita said:

We are lucky there is an imbibition print of Star Wars at all. Star Wars would have been the last big release to get an IB print I would wager.

Technicolor had already stopped producing IB prints at all in the early 70s, All Star Wars IB prints were produced at the one remaining facility in the world, in the UK. They shut down in 1978 and sold the gear to China. Had that happened a year earlier, there would be no IB prints of Star Wars for us to try and find.

I'm not positive, but in the States I believe the last big title was Godfather 2. In the UK, most likely it was Star wars. Would be interesting to hear for sure though.

Actually, Technicolor had a lab in Italy I believe, that remained open until '79 or '80. I've heard there is actual IB prints of Empire Strikes Back in Italy, but whether this was a one off test print for Lucas's archive or not, I don't know. I did have a trailer for Grey LAdy Down (79) that was IB and had dutch subtitles, so likely that was from the Italy lab.