This stamping plate is from the forth Bundle Monster set, the first CYO (create your own). It is backed with branded lining to stop it from being sharp, comes covered with a blue cellophane sticker which you have to peel off before use.
On BM417 there are four full nail images and two smaller ones. All of the images were a little tricky to stamp across, I think that is because of the fine lines and details.
You can see all of the designs I have used this plate here,