No lowercase. Issued by Nebiolo as metal type in 1970 [Archivio Tipografico] or 1971 [Reichardt 2011]. Adopted by Letraset soon after [1973 catalog].
No to be confused with Stop (Ludwig & Mayer, 1939).
Various digitizations. See R41 Stop (Dan Rhatigan, 2024) for an interpretation with extended language support and various alternates.