This is the 1949 Ferrari 166 MM Touring barchetta s/n 0014M at a race in Nurburgring on Sunday 3 August 1952.<a rel="nofollow" class="external autonumber" href="http://www.barchetta.cc/english/all.ferraris/detail/0014M.166MM.htm">[1]</a> It was driven by its owner Valdemar Stener of Sweden, and was painted blue with 3 yellow stripes across the bonnet. <hr>The race is supposedly the XV GP of Germany, but not the "main" competition, rather a different class of cars (maybe the 2-litre class?). The race does not show up in Google searches.
Unknown photographer
<a rel="nofollow" class="external autonumber" href="https://scontent.fsvg2-1.fna.fbcdn.net/v/t1.6435-9/184323020_3640850472806951_8529123349651313181_n.jpg?_nc_cat=109&amp;ccb=1-4&amp;_nc_sid=b9115d&amp;_nc_ohc=pn-maSMr76kAX_SOKbP&amp;_nc_ht=scontent.fsvg2-1.fna&amp;oh=e630d9e1f3b3c799fadf1ba1a2d59b68&amp;oe=61378E58">[2]</a>