Turbo B18C EJ6

I posted this in integra type r furum but figured i would try herer as well.I bought a set of cams a while back and was told they were itr's. I did some research to make sure they were "real" itr cams. the intake cam has the two engraved rings at the end and the two protuding rings. Only problem i ran into is there are numbers on the end of the cams "535" on both the intake and exhaust. I have heard honda cams never had numbers on the ends, So has anyone ran into this before? ill upload some pics soon when i get my camera, just looking for some ideas?

Turbo B18C EJ6

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