My guess is it was drawn by the designer but inspired by Milton Glaser's Baby Teeth font:
I couldn't find a font with this letter "S" (or "R"
) either.
Fonte sugerida: Baby Teeth
Editado em 10/04/2021 às 14:05 por fmontpetit
I spoke to Brandon Rike, creative director for the album:
"Mix of Tenebras and Monarch."
Shoutout to cassie2006 for the clue to the old Monarch version.

Posted here many times but never really identified.
Since the logo is from 1972, my guess is it's a distorted version of Eurostile.
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