>>450305
LMAO, cheap movie posters haven't been screen printed since movies were brand new technology.

Which appears to be the last time that Brittanica entry was updated-

>The screen is usually made of fine but strong silk gauze

>Direct or indirect photomechanical processes are being more and more widely used, however.

Also, there's this-

>A Serigraph is an alternative name for silkscreen printing that was coined to distinguish it’s uses in the fine art world from that of the commercial printing world.

Any four color advertising poster commercially printed after WW2 is almost certainly done using offset lithography.

https://en.m.wikipedia.org/wiki/Offset_printing

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How did they make this movie poster before photoshop?