Reply To: Pierce Arrow Step Door Sill Plate I.D.

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Hi- my guess is a 1929 to 1931, I believe after that the door sill plates started getting much thicker (larger) than this fairly thin one. I have a later one sitting in my closet, it is steel; it is possible that the copper color you are seeing is just that, a copper coating as part of the chroming process on the steel.