Hmmmm....
Look at photo of Fangio's car after start of GP Sanremo:
http://i68.servimg.c...04/sanrem11.jpg
Same style how the racing number drawn
To my eyes this looks like a different number style again - there's no nose band and the number's not square-edged, but the number looks to be painted a lot wider in this second photo compared to the one linked to (of course they could have gone over it with a wider brush...).
Plus of course the radiator is partly blanked off, but I suppose that's something which could well change during practice anyway.
PS. Great photo from post #44 wherever it is - hope someone works it out.
Edited by JohnB, 18 December 2015 - 22:45.