I was compiling a list of parts for plating in various finishes and one of the pieces I had in question was my trunk latch, for an Oct 69 Dearborn Mach 1. Mine is exactly as described by Brian, but I would say the yellow zinc on the underside, where it was pressed against the metal, was unmistakable. I had assumed these were clear zinc. Now it looks like, along with the door strikers/spacers and (visible portion of the) door latch, that it should be plated yellow zinc. Hmmm, that just leaves the trunk latch-no evidence of gold/yellow on that...