Just picked up an older 650 with casefeeder.  How can I tell what the age of this is? 

The support arm between casefeeder mast and tube is metal, and the primer cup catch assembly is sheet metal with plastic cup.  Casefeeder label totally different from what is out there now with "casefeeder for  xl650 and rl1050" in small print along the side.

Primer failsafe has the old metal ring instead of the newer plastic piece (which I would like to get if possible!)