I got 2 of the new USDGC rocs that have just come out today and wonder if anyone else has any yet. I have seen 6 different stamps, but have only thrown 2 of them so far. One has the stamp of the first run roc in "99" and the other one has a San Marino spelled out on it, but it's hard to tell at first what it says. The San Marino is stable and can be turned over pretty easy, but the one with the Thrower stamp on it is a little meaner and more overstable a little. Man they are some sweet discs and are going to go pretty fast! The one's with the "99" old school stamp has a certificate of authenticity and they are #, because only so many of them were made. I LOVE CHAMPION ROCS!!