In 1931 in Rumania the aviator Octavian Oculeanu made a long distance flight from Bucharest to London and return in Emsco B-3A monoplane CV-GOI.
I know that the EMSCO B 3A was a 9-seat high-wing monoplane, powered by a single 420 hp Pratt & Witney Wasp C. The one exported to Romania in 1931 was NR166W c/n 5, which became CV-GOI – the 'GOI' indicating owners Ghiga Oculeanu si Ionescu. I assume CV-GOI was scrapped before being allocated an YR- prefixed registration.
EMSCO stood for E. M. Smith Aircraft Corp., which was formed by industrialist E. M. Smith at Downey, California in 1929 and ceased operations in 1932.
Does anyone know more?