This is a great example of how kids use to get their helmets in the 1960's.  This paper is dated 1961 and I found this still in the package of a helmet from the 1960's not so long ago.  You can see that you bought the sticker separate and then decided on which helmet you wanted.  One type of helmet was just a toy model and the other helmet was considered super strong helmets.  If you own a super strong helmet you can easily tell the difference. 

 

This page here is the backside of the above page.  It just shows the different bobble heads you could by back then.

I stumbled across this on the web the other day.  Check this ad out from 1963.  Colt .45's helmet dead center!

I found this ad recently inside a Dodgers 1983 Scorecard Magazine.