During the production of the 365 Boxers Ferrari began using a smaller Dinoplex unit, the AEC 104 BK model. This one has a blue foil sticker, 53 x 80mm. These Dinoplex units were used on the 365 BBs, 512 BBs and the 400 sedans. AEC 104 BK Dinoplex Foil Sticker
The rectangular foil coil stickers were used on the late 250 GTEs and Lussos from 1963 on through the 275s, 330s, 365 single-cam cars and even the early Daytonas and c4s. The stickers were positioned 1/4″ from the bottom of the can in line with the center of the resisters. I have seen rectangular stickers that looked like they were printed on gold foil. These may have been an earlier reproduction, or may have been discolored due to the oily vapors and engine heat or may have been originals. Rectangular Magneti Marelli coil Stickers.
These numbers are used to denote the firing order sequence and are positioned in the top of the distributor caps. This package is for the numbers 1-6, for each distributor and a spare set in case of a mistake. Distributor Cap Numbers.