Up for sale is,

1 - Engineering Sample(?) Nvidia GeForce GTX 1080 8GB GDDR5 Founders Edition GPU

Recently purchased this card and noticed it didnt have any markings like a typical 1080 and an all silver heatsink without any other stickers on the back, it looks like it might be an engineering sample, if I am wrong please let me know, I haven't tested, selling as-is