I'm not a big fan of TPG or CAC but both of those would never miss a tooled coin. These folks are really good when it comes to that.
No, tooling and carving details back into a coin is nothing like dipping and PCGS and CAC wouldn't have both missed it
Here is an example.although I don't know how they know https://auctions.stacksbowers.com/l...pped-bust-half-dollar-unc-details-tooled-pcgs