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).
Contributed by Florian Hardwig
Contributed by Jorge Iván Moreno Majul
Contributed by Nick Sherman
Contributed by Stephen Coles