The third type of air cleaners was the more conventional “Coffee Can” model. They used a satin black painted steel top and bottom with side panels made of louvered aluminum or perforated and nickel-plated steel. The earliest ones had the Weber information embossed in the top but this was soon replaced with a smooth top using the same Weber tag riveted to the top. Early “Coffee Can” top Weber tag.
From the early 1950s until about the time of the introduction of the outside plug 250 engines in 1959, Ferrari used the black Magneti Marelli B-7 design coils. These were slightly larger than the B-5s and again had the mounting bracket spot welded onto the cans. The whole assembly was painted satin finish black and the aluminumB-7 tags were attached to the bracket with two tiny “u-drive screws.” The usual practice was to cut off the ends of the aluminum tags, at a 45-degree angle, near the end of the lightning bolts and then attach them with one rivet on each tab. I have alos seen original pieces with full-length tabs and using two rivets on each tab. Blue aluminum Magneti Marelli B-7 coil tags.