The late 275 GTB/4s and 330s used a new type air cleaner assembly with four “snouts” on the sides replacing the perforated steel side panels. These air cleaners used a large rectangular blue F.I.S.P.A tag. These are 92x35mm with 67mm hole spacing. These and all of the earlier tags are attached with small aluminum or steel round-headed hand-bucked rivets. The very early tags on the “Ram’s horn” castings were attached with “U-drive” or “Drive screw” type fasteners. Rectangular F.I.S.P.A air cleaner tag for 275/330/365s
Ferrari made a small series of Super cars in the late 1950s. The larger engines required a larger filter element and a different tag was used. This one has the word “RETEX” (net or filter) in the center of the top line. Super America crescent-shaped air cleaner tag.
The very earliest cars used the Magneti Marelli B-5 coils. These coils were black and had the mounting bracket spot welded onto the black metal can. The B-5s had a small vertical slot on each side of the mounting bracket. The end tabs of the aluminum tags were inserted into the slots on the mounting brackets. Rivets were not used on these tags. These coils were used on only the earliest cars in the late 1940s and early 1950s. Etched Magneti Marelli B-5 coil tags.