It's really hard to tell since wears & tears happen, that include making the stamp appear less clear. Did you try to go to VCA's website to place a service request? When you do that they ask you to enter the serial number for the creation, you can see if the serial number match with the creation you have and not getting an error or a different creation pop up associated with the serial. Only way to find out for sure is to send it off to VCA's workshop to get authenticated, even SA can't tell for sure despite the serial number matches with what they have in the system.