I have a '312 Y-Block with chrome valve covers that say...."Ford" stamped in them. These are not import repops. When you turn them over....there is a band of steel running all the way around the bottom that was spot welded in before chroming.  Did Ford Motor Co. offer them as an option on some models?  All input greatly appreciated. They are in excellent condition.  Thanks............Ron  

Still Livin In The 50's!!!  '55 Tudor Customline with a 312ci Merc/4-Speed/Granada Rear.