3M 206, introduced in 1969, was the first that didn't offer an acetate
version. It forced us all to buy much more expensive razor blades!

They told us acetate tape would all fall apart by the mid '70s...

Bob Olhsson Audio Mastery, Nashville TN
Mastering, Audio for Picture, Mix Evaluation and Quality Control
Over 40 years making people sound better than they ever imagined!

-----Original Message-----
From Tom Fine: Association for Recorded Sound Discussion List
[mailto:[log in to unmask]] On Behalf Of Sent: Wednesday, April 18,
2012 12:58 PM
To: [log in to unmask]
Subject: Re: [ARSCLIST] Acetate 1" tape ? ? ?

I think 3M and Audio Devices (AudioTape) were making acetate tape into the
60's. I've dubbed many quarter-track duped tapes that are "see through",
which I think always means acetate backing. Known production dates up to the
1963-64 timeframe