https://www.reddit.com/r/typewriters/comments/1qr703r/identification_help_needed/

Olympia SG Typewriter Platen Knob Shaft Bent, Repaired, Straightened<br /> by [[Duane Jensen]] of [[Phoenix Typewriter]]<br /> accessed on 2025-08-18T08:17:57
Typewriter Video Series - Episode 173: Olympia SG-3 by [[Joe Van Cleave]]