Thanks so much, what a great picture and a great example!!
Often pictures can change color a bit so I’ll ask the question to be sure.

Based on my example I can confirm on the larger nut, the Pal nut was yellow chromate, and believed the cap over it was clear zinc, you agree this appears to be the case. However, looking at the photo it appears to be the entire nut assembly is yellow chromate, but appear to have been plated separately and the reason for the chromate color differences. This is more appearent when comparing the finish color to the smaller nut in the photo, that we agree is clear zinc and a clean silver color.

Additionally it’s great to see that this photo supports that no seal was placed on the bottom. While I had no evidence of a seal or sealer on mine, I do see many selling these with a seal, making me question if what I had was played with over time.

Again, not having seen it in person I’m only asking the question and will rely on you for clarification.

Again, great photo!!!!!