I found it S.P.C "el Mono" (the monkey). It was made in Uruguay by José Suarez, Roberto Pietracarpina and Eitel Cantoni S.P.C. (Suarez, Pietracaprina y Cantoni) It had an Essex chassis with a Ford B 4 cylinder engine with a DOHC Miller head, 52HP@2800 rpm and 160HP@5000 rpm. I also found it referred to as Alpax el Mono