Uploaded July 2021 | Updated September 2026, 1 week ago

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SR (Servo Rotamatic) (hyperlink to: SR.mp4) state-of the-art envelope manufacturing equipment, delivers commercial style envelopes at up to1,200 per minute with repeated quality.
America’s Mailing Industry virtual exhibition:
https://postalmuseum.si.edu/exhibition/america’s-mailing-industry