I can't tell much from those photos. Is the anomaly raised or incused? Could be a plating issue, but without additional information, i.e. full image photos, we probably won't be able to help you.
It's only raised below the normal die impressions, defanately hasn't been heated, I wish I could make out a imprint but it's like it's behind the plating. No idea, it's kinda unique tho I guess....
The top left of the building is mis shaped, the columns have something behind them. The stairs almost look like their all pushed upward, also bottom left of the stairs have extra material or something. Probably not worth much im guessing. It has doubling...possibly machine double? No idea about this one....
