I may be wrong but am pretty sure that decal would go on a window or door of the dealers shop.
Now as far as dealer decals for the cubs I have seen them on the side of a fuel tank, mine is on the left side of the dash tower, have seen them on the back fender pan, just below the seat, I think they got put wherever the dealer felt like putting them.
You might be talking about a sticker that looks like this?:
dealer tag.jpg