BHarry
The Eclectic Collector
I believe at some point there was a problem with a sense or something and Oakley replaced the glasses. The box and coin are original and the glasses are direct from Oakley.
Alternatively, he could have turned in the original romeo and gotten the xx from the warranty exchange program. This is why the xx has no serial
This is my guess. Your Romeo lenses cracked due to a "design flaw", so you received a new pair of XX through the warranty program. Those came without the box/coin. The box/coin is from the original pair.
The value of the box and coin is totally separate from the glasses. Your biggest issue selling the XX is the loose nosebridge. It adds potential money and hassle to the purchase.