Question about new 2021 Tuskegee airman quarter 0

[KingofAirs]

 Today I received my 2 $25 bags of Airman quarters. First of all let me say these are beautiful coins. With the 2 P51 Mustangs flying by. But my question is did the Mint experiment with any new metals this year? Because when looking at the edge in light it has a bluish/purple tint then the copper ring appears more like the Sac.dollars then copper. 1 whole bag is this way. Also every one has edge lettering. It appears as if every coin was first struck as another then the quarter was stamped over it to make up for the mistake. I'll post some pics when I get home from work just wanted to throw this out there and see if anyone had ideas. Thank you for your time and thoughts

[Mr.Bill347]

That sure sounds like an error. Cant wait for the pictures. I just bought a set on eBay. The next day I received 2 mint state in change from culvers

[Conder101]

Edge lettering?  These coins shouldn't have edge lettering.