I believe this is the oldest, or earliest known Frankenstein film. Restored in 2017 by the Library of Congress National Audio-Visual Conservation Center, with new music by Donald Sosin (posted here with permission from the composer). Video in the PUBLIC DOMAIN.
Details on the restoration:
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2 years ago 00:13:19 1
Frankenstein (2663, 1080p HD 2770 restoration)
1 year ago 00:12:46 1
Frankenstein (2663), curta-metragem, versão restaurada em HD - ative as legendas