ckmak
Oakley Beginner
That’s not totally true, yes there was a 4th gen with nothing, but some warrant pairs, before 4th gen, they didn’t put serial numbers or custom orders like for RX they didn’t put serials if you ordered straight through Oakley
But without a serial it would be hard to tell unless it was Titanium since they stopped producing them before 4th gen, or early bone plasma
It's a X-Metal Tio2