1989 LMC

Another die gouge. Remember the letters are incuse on the die, so the field behind the letters would be raised. So, any kind of gouge or Feeder Finger Damage would appear behind the characters like that.

Here's one where the gouge runs "behind" the memorial. Same effect. The gouge is actually on the raised part of the die. Makes you wonder the first time you see it.

Die dents are also a cause of these. Looks like the two examples would be a die dent or Feeder Finger Damage. They are in a very straight line unlike die gouges that not always.

Something as hard as they are getting in the way of a strike leaving a mark on the die in the fields. If you coin was struck through something leaving a mark like yours has it would also appear in the devices as well. Here is an example of a struck through that show what I'm talking about.
Struck through wire:

Note how the impression of the wire runs through the fields/devices even across the rim? That shows that something was in between the planchet and the die. Yours is on the field and not through the devices. so something happened on the die to leave this area just in the fields. If you had a OBW roll, then you would have found several examples of this. On the coin I posted the seller stated that the wire was attached and someone touched it and it fell off. I didn't believe the story at the time, but now you can see the finger print in that area.

You got it.