If they are the laser engraved "P" they are 525SS's. If they are molded with the rest of the faucet with a block letter "P" they are 630SS's. (Assuming they are the forward sealing "Perls")
Those are 630SS as I stated above. I have the chrome plated brass 630PCs and used 525SSs in my system (and an Intertap that I like better than both the Perlicks) so I noted the most obvious difference, the Perlick logo....