I have never had a carded graded. Too old to start now
One of my collecting parameters was to try for anything and everything the SCD Standard Catalog listed for Topps baseball through 1994, when the proliferation of product did me in going forward. That included all inserts and test issues, issued or not.
The new Catalogs now only list through 1980 so I have held onto the last complete one, I think from 2011