What caused these pillars?

I only call them pillars because the look like it. The are raised and run under the letters.

 

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Post in full please if you like someone to give you the answers.

 

Fixed

 

I am quite sure that is caused by this,
https://www.error-ref.com/accidental-die-abrasion/

 

Might be feeder finger damage.

 

1944-S

 

damn near the same. Must have come off the line at the same time.

 

There is a possibility that your coin and mine were struck with the same die pair.

 

Planchet error? Strange that they are raised but UNDER the devices.
@Fred Weinberg was on earlier, maybe he will see this and respond.
Meanwhile, @JCro57? @paddyman98? Others?

 

Die Abrasion seems like what caused the issue on both Cents.
Interesting.