In ¿Las cual de 13?, aka 12 + 1, aka Twelve Plus One, an Italian barber played by Vittorio Gassman inherits thirteen chairs and, deeming them useless, sells them to a London antique shop. He later discovers one of the chairs contains a fortune, but when he returns to the shop he's told they've all been sold. So he offers the antique shop employee Sharon Tate half of the fortune to help him track down the chairs, which of course have scattered to the four winds.
The poster above was painted for the film's Spanish run by Carlos Escobar, who signed his work “Esc.”
Source: pulpinternational.com