This looks very much like the 1949 Ferrari 166 SC s/n 0012M, and with entry #18 it could be at GP Portugal (Boavista?) on 17 June 1951, and if so, supposedly with owner Emilio Romano driving it.<a rel="nofollow" class="external autonumber" href="http://www.barchetta.cc/english/all.ferraris/detail/0012m.166mm.htm">[1]</a> Maybe he is the man in the picture, but this looks like the outfit of a mechanic and not a driver (and not so sure it really looks like Roman)?
Unknown photographer
<a rel="nofollow" class="external autonumber" href="http://www.kwa-kwa.pl/strona/images/stories/thumbnails/images-stories-kwa-kwa-1951-zagranica-wyscigi-9.portugalia-1.gp-portugal-image006-440x590.jpg">[2]</a>