Ferrari engineers with 12 spark plugs in 1949.  From left: Cassani (Pasquale?), Gioacchino Colombo and Luigi Bazzi. Source says this is at European GP, so it should be same as Italian GP at Monza on 11 September 1949 won by Alberto Ascari in a Ferrari 125, which had a Colombo-designed 1,5 litre V12.
Unknown photographer
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