Ferrari had a long relationship with the Shell oil company. A lot of the early cars had some type of metal tag in the engine compartment specifying the type of Shell oil to be used. 250 GT/Berlinetta/4.9 Shell Oil Tag. 172mm x 76mm
The early racing cars used an aircraft rotary fuel pump. These are seen on the TRCs, Testa Rossas and the Maseratis from the 1950s and 1960s. These tags were screwed on the front surface. The dimensions are 43mmx43mm. FIMAC Fuel Pump I.D. Tag.