Designed by Seymour Chwast in 1971 [Seymour Chwast Archive] and released through Photo-Lettering. Shown in their One Line catalog (1971) as Push Pin Myopic, in four variants; solid, Open A (outlined), Open B (outlined, SE double), and Open C (outlined, SE quadruple; shown). Unlike the sample may suggest, all variants come with a lowercase.