Photo: P. Musgrave, CC BY-SA 3.0, via Wikimedia Commons (Silent-Super shown; the Sterling shares the 5-series body, 84 keys vs 88)

One example. Colors, sub-models, and production years vary; the machine you find may differ.

Smith-Corona Sterling / Clipper

1950–60 · United States · Portable · 5 kg

American mid-century

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All sources

External, in their original form. The people who know these machines best — click through to read and watch.