At first glance, I though this coin had either an area of localized cleaning or a severe wheel mark below the building. But once I took photos of the coin and saw the area closeup, I noticed that the lines stop when they run into the letters of MONTICELLO. Specifically looking at the "C", if this was done post mint, there is simply no way that the "C" would be unaffected as it appears to be. My next though was that somehow a mint employee went nuts polishing the die, but considering that the lines are perfectly straight & parallel and extend in the devices, that eliminates die polishing lines. The only other thing I can think of is that we are seeing remnant planchet striations possibly caused by the rollers during the planchet manufacturing stage. Has anyone ever seen roller marks on a Jefferson Nickel before?
Interesting, I would say that it has to do with the planchet and not the dies. I have seen planchet striations on most other denominations except nickels. The striations look heavy and raised quite a bit in your photo.
