An all-caps open/inline style accompanying Sphinx (Deberny & Peignot, 1925). Sold by Reggiani as Norma filettato [Reichardt 2011]. Imported to the US by The Continental Typefounders Association.
Adopted by Photo-Lettering as Sphinx Inline [PLINC 1950].
Digitally revived by Steve Jackaman as Sphinx RR Inline (Red Rooster, 1992), adding a lowercase. Doug Olena is credited with another revival (Keystrokes, 1992), adding a Condensed Inline style.