Vintage heads still in production?
Yes, visually the simple smileys are the same now as in the past. The difference is in the stud. Some have a stud like what you have pictured above; with an open stud and others have a solid stud. Other than that, the face itself is exactly the same. You can three all three versions of the stud here (solid, recessed open and recessed blocked) here:  http://www.bricklink.com/catalogList.asp?pg=1&amp;q=standard+grin+pattern&amp;catLike=W&amp;v=2