Porcelain all looks good and raised as it should be.
I don't know why so many people think the shelving on signs is a factor in determining authenticity.
Just some friendly advice to let you all know, porcelain can have thick shelving on real signs AND on fake ones.... and Porcelain can have little or no shelving on real signs AND on fake ones.
Unless you are comparing it to the actual (same) manufacturer of a particular (same) sign when it was manufactured, shelving is not a tell tale sign.
Just a free lesson,