My new MFO-3 arrived recently and for the life of me, I cannot locate a serial number on it. I find that unusual in that Nauticam puts a serial number on just about everything they sell. There is what looks to be a serial number on the packing box, but not on the lens itself. Anyone else run into this issue?

Hi @Tony F I received my MFO-3 yesterday....
No Serial.... wrong... you didn't look at the rigght place... ;)

Here the picture

I see it now - it's under the rubber grip. Thanks!

Yes