Bach 12C trumpet mouthpiece

I bought this used, played it once, and it's been on a shelf for a decade at least.The rim is smooth, but the bottom is dented in a bit. I bought it like that. See pics. It's an easy fix.If you like Bach mouthpieces up in the double digits, this is for you. If you're a 1.5C/3C person looking for a change, I don't really recommend this. impeccable for everyday use. excellent materials and excellent craftsmanship ensure long-lasting durability.