Roger: No I don't collect stem variations – the different colored bottom part – cause you can have one Pez dispenser that has a head and there will be the same head but the bottom will have a different color. I don't collect those at all so mine are all different Pez dispensary heads, because the head is really the most collectible part. I'm trying to give you lessons on Pez dispensers... How dare you suggest I collect stem variations? Are they all duplicates? NO THEY'RE NOT DUPLICATES! That would be cheating.