I'm chuffed to have recently acquired this from Joe Lee. In many years of looking this and the Nicholson coin (ex Peck) are the only two examples I've ever seen.
It means have a look at it before bidding as we dont think its right or cleaned but not as bad as the others 😀
They would not say it if the coin looked ok ,so either unnatural or altered surface / finish ?
Ah a bit more like some of the terms that entered numismatics years ago like "Edgy" which might mean light damage ie edge knocks on a coin , that is certainly more used than many .