Looks more smudged than Thin to me, if I’m completely honest. Coincidentally enough I did purchase another PSA-10 Red Cheeks Pikachu this week that kinda looked like a Thin stamp as well. Even with additional pictures from the seller I couldn’t tell for sure. It’s definitely thinner than a regular Thick stamp, but I think slightly thicker than my Thin stamp Yellow Cheeks I posted on the previous page. Decided to buy it regardless. If it is a Thin stamp Red Cheeks Pikachu I’m extremely happy, and if not, it’s still a nice PSA-10 1st ed. Red Cheeks Base Pikachu for my collection.
Only the Base Set has Thick and 3D stamps, and most 1st edition stamp variations.
All other sets are always Thin, but it is indeed possible to have a Grey Thin stamp. I’ve got a Neo Genesis Pikachu with a Grey stamp, and I’ve also seen a bunch of Gym Heroes 1st edition cards with a Grey stamp before.
Apart from that there is of course the “d” edition error for the Jungle Butterfree.
Yeah, I did some comparison pics of it to your/my old one and it was close, but I’d have to agree it’s more smear than thin. Too high of a price to risk for a low priority side collection, but if you grabbed it - lmk if it ends up being thin!
It’s already sold, and I’m not the one who bought it. But if the other PSA-10 1st ed. Red Cheeks Pikachu I have incoming has arrived I will tag you; hopefully it is indeed Thin, although I kinda have my doubts.