The tolerance for the Copper cents is 0.13 grams by the US Mint but that coin shows a lot of wear so I would says its all natural wear and tear.
When in doubt, calibrate the scale. The portable ones like you show, and also I have , can if moved, get off calibration. I usually calibrate if I get a weight out of limits to be sure. Jim
There's a lot of wear on that coin and it could be a thinner than normal planchet but it's not enough to make a difference.