Authentic US Navy Mark V vs. Reproduction Mark V 

Excellent resource for the new collectors, NationsAttic. Good job!

This should be required viewing for tattoo shops. I've seen dozens and dozens of replica helmets tattooed on people.

Thanks very much Don!

There are reproduction helmets that have come out in the past few years that look exactly like a genuine Mark V. The only way to tell them from the real thing is to examine the helmet in person, knowing what to look for, or ask an expert. Unless you know what you're doing, always either make sure the helmet comes with a guarantee of authenticity or ask an expert before buying .

Would the reproduction still work as a diving helmet underwater?

I like the helmet with the large window, but the port type windows is what you think of when you say hard hat diving.

Fascinating information, thank you.

Fantastic analysis!

I have a replica like the one you show here but I'm missing the lens for the top. Do you know where I can find this part?

I would like to find the specs of a US Navy Mark V diving helmet. I want to create an accurate cosplay/costume of the helmet. Does anyone know where I could find the info or specs? I've looked but to no avail.

Where do you get everything else

I see that India makes the repops these days.

What does the chin button do?

It would be easy to make it look real to the untrained eye, just lower the upper view port and lower the speaker box to the right position."

the copy could be identified by a blind person!!!!!!!!