Based on Prisma. Initially shown by Photo-Lettering as Neon. [PLINC One Liner 1971]
No official digital version currently available. Among the unsatisfactory attempts are Neptune (FontBank, 1990–1993) and the shadowed Multistrokes (Manfred Klein, 2003). See NeoNeon (2022) for a better drawn rendition.
Photo(s) by Bart Solenthaler on Flickr.
Contributed by Florian Hardwig
Contributed by Stephen Coles
Contributed by Garrison Martin
Contributed by Chris Purcell
Contributed by Johannes Vandenheuvel
Contributed by Ian Lanius