Chupa Caps > Yellow Back
Info:Chupa Caps came in a large (tall) plastic Cap container with 10 Caps, 1 Slammer and 2 Chupa Chups Lollipops.
The first 30 caps are Lenticular, having 2 different images on each of them, and are much rarer than the rest. These appear to use designs taken from Slug milkcaps (#29 features a slogan 'Slug Rules').
Numbers 61-90 are printed on holographic foil. A number of different types/designs of holographic foil were used, so there are multiple versions of each 'shiny' Chupa Cap.
Below is not the full set - there are a few missing.