i have bats that between my son and i have been used and are a few yrs old. They have the new stamp and it is clearly visible but some parks are throwing them out because they cant see the name of the bat. for example my Z2k bats. they are used and have been hit alot. the paint is wearing but the stamp is clearly visible. or my old psycho bat. you can see the stamp the miken name is barely visible but you can see it. the psycho name is also wearing out but you can see. both my bats get thrown out because of the paint issue. if you can see the stamp is that all that should matter?