Dragon Master wrote:I stumbled upon something odd the other day. One of my "smile" minifig heads was different, his stud was different. It was not an indented peace sign thing, but an outward stud. I found 3 in total. How old are these heads?
I'm not sure if I understand the question correctly...
Are you speaking about heads with solid studs (as opposed to the current heads with a hollow stud and tierced hole in it)?
If "yes", heads with solid studs were the regular ones and have been produced up to about 1991. So when you get a set from 1989 and the studs of the heads are hollow these heads are wrong (if you ever care about such details).