Help me identify these OEM front & rear springs

[Gt4]

I bought a car (E30) last week and these came with the car. I just want to make sure they are E46 M3 springs or want to know which platform they cames from!

Front springs have 3 grey dots

Rear springs have 1 blue dots

So I want to know if they were E46 M3 Coupe or Convertible springs or not!

Thanks

Edit: Found out they are E46 325i springs!