Pokemon 2017 SM#1+ Strengthening Expansion Cosmog Reverse Holofoil card. It was only available inside random booster packs of the SM#1+ Strengthening Expansion series that was released in Japan, in January, 2017.
Card #: 027/051
Type: Reverse Holofoil
Condition: Mint condition. Never been played with. No noticeable creases, dents, scratches or whitening on edges of card.