Well, turns out this seller's rating is just 99.1%...good call Rocket.
The IC's lettering look legit, I don't see any sanding and the "S" appears to be original, they all look similar and consistent.
Either a very good counterfeiting job, or these were previously damaged.
The last good batch I had purchased from China, that seller's rating is 99.6%. Going to try them again.
Maybe we should start a thread for recommended overseas ebayers :0)
1978 Gibson Les Paul Standard, Cherry Sunburst