second stage serial number location

[c5diver]

where is it? the only place i haven't looked is under the mouth piece. should it be the same as the first stage

 

[XNAVYEOD]

Not sure which one you have, but mine is on the top of the mouth piece, and the 1st & 2nd stage are the same.

 

[c5diver]

its a v32 proton ice extreme.

 

[CAVDVR93538]

yes, the serial numbers should match if you haven't mixed the set with another

 

[Zak OHara]

I agree. Generally the serial number is imprinted on the mouthpiece area of the 2nd stage.

Hope this helps.