Lichtenstein Merton poster typeface

Dear Typophilers,

Can you identify the light sans serif typeface on this poster by Roy Lichtenstein?

Many Thanks.

Sincerely/
John Einar Petterson

Comments

Nothing quite nails it: neither Blippo, nor Horatio, ITC Bauhaus, Pump or ITC Ronda. Could even be ITC Serif Gothic with alternates, if there were little serifs on the strokes. Definitely photosetting, early 70s by the looks of it. Probably not digitized.

Cheers Erik. I keep on looking in the books.