1999-D Jefferson Nickel. DDR

Interesting.

Anyone know where Andrew the nickelmeister is?
Sure would like his thoughts on this one.

1999-P nickel: https://www.pcgs.com/cert/47974136
1999-S nickel: https://www.pcgs.com/cert/81467672
Variety Vista nickel reverse design progression: http://www.varietyvista.com/04a%20J...arieties.htm

Finally got a little free time to post.

I believe what you are seeing is a peculiarity of the Jefferson nickel reverse design for RDV-009. You can find the reverse design catalog on Variety Vista at the link above. Keep in mind that the US Mint makes many smaller modifications over the years that are not cataloged as major reverse design changes.

For RDV-009, the doorway, triangle, and windows do not stand in relief. That is, above the coin face. They are formed by incuse lines pushed into the metal. I have linked a 1999-P nickel above, but the 1999-S proof nickel shows it best. The difference is most easily seen on the triangle and door. On RDV-009, the triangle is formed by pushing a larger and a smaller triangle outline into the surface metal. What remains is a triangle line standing by itself that is level with the surface of Monticello. The same is true of the doorway—the entire empty doorway isn't pushed into the metal, just the outline of the doorway to highlight the door frame.

This is quite a difference to RDV-011 for 2006-2024 nickels. On those coins, the doorway and triangle are formed by die recess. When struck, they physically stand above the other metal features around them. The empty space inside the triangle and the doorway are struck by the die to be flat and below the plane of the doorframe.

That little doubled line in the arched window is part of the design. You can see it on the proof nickel. I assume it was intentionally designed that way.

Not sure what the OP meant about the right pillars.