(Very new to thrifting) Bought a smooth 80s cast iron pan and noticed some silver specks only after getting home.

I’m guessing the finish chipped from the store cleaning the pan aggressively, but poorly, given the recent sticker date. Is that unusual? Gonna refinish it myself this week, as long as this isn’t setting off anyone’s alarm bells.

Edit: gonna head to the hardware store for a lead test kit and magnets this weekend, unless someone can think of a better process. Thanks for the advice, all!