Yep!!! For the SBP cap sequence, here is the general rule...
1970= Cone style with light argent painted relief
1971=Cone style cap with dark argent painted relief
1972 and up= Acorn style with light argent painted relief
You may find them painted other colors, the acorn style may have a removeable center, but above is the way they came from the factory in their respective years!! Hope this helps, Geof