The disc you have has a 2010 event stamp. The regular Nuke came out in late '09, so it could be a regular Nuke. The Nuke SS and Nuke OS didn't come out until the spring of '11, so it wouldn't be a Nuke SS.Ok the original person who said it could be a Nuke I think is the winner. Now that I see this picture. At least this version of one looks the same:
https://www.wrightlife.com/disc-golf/golf-discs/distance-driver/discraft-nuke-ss-esp/
Sorry I doubted it. I saw another Nuke, maybe a different version. This is the Nuke SS.