A series of condensed sans serifs, with differences in the details across the sizes. Most notably, the largest size, 36 point, is significantly heavier than others. No lowercase. See also Condensed & Elongated Sans Serifs.
The 36 pt size was adopted by VGC for phototypesetting as Sans Serifs No. 1, Condensed. [VGC 1973]
Digitized as OPTI Sans Serif Condensed One (Castcraft, 1990–1991, used for sample).