Pokémon Dark Jolteon Team Rocket 38 1st Edition Uncommon Grey Stamp ERROR Pop 1

Pokémon Dark Jolteon Team Rocket 38 1st Edition Uncommon Grey Stamp ERROR Pop 1.
While I don't know 100% that is a pop 1 as CGC doesn't track errors in it's pop report. I know grey stamp Rocket cards are extremely rare, there are very very few listings and sold listings and I've yet to see another Jolteon.
If you have any questions feel free to ask. This came from a booster box I opened myself back in 2013. I have looked through all the other cards from that box and also handled 1000s of other 1st Ed rocket cards and NONE had a grey stamp other than this one.
This will be shipped safely and securely with a collectors care.