Vintage Resistal N.A.K. Aviator Goggles?

I suspect that there must be a few vintage aviation buffs here...

I have a pair of Resistal N.A.K. aviator goggles in their original box.

I'm trying to figure out exactly how old they are and learn anything else that I can about them. Web searches are coming up a little short on this particular model. I found an ad from 1918 with a drawing that appears similar and an aviation supply catalog from 1931 that lists replacement lenses for the model N.A.K., but I'd like to narrow it down a little more if I can.

If anyone can offer any insight, it would be appreciated.

National Geographic, 1918

Beazley Aviation Catalog, 1931

No help here, but those are sooo cool! 8)

Steam punk for Halloween?

Adrian_Thompson wrote: Steam punk for Halloween?

No.

I bought mine just like that in the box at a flea market in Ft Wayne for 7.00$. I've since seen two other set between 12-25$. Mine don't have dates and neither did the other sets I saw.

Woody wrote:

Adrian_Thompson wrote: Steam punk for Halloween?

No.

Gonna drive an open-top classic around wearing these?

Getting ready for his Exocet :)

Y'know what car these woulda suited, right?

(a certain yellow speedster)

I need those with an old matchless bike

You need one of these:

and one of these:

or if you want to go full retro, one of these:

Luke wrote: Y'know what car these woulda suited, right? (a certain yellow speedster)

Why, you.....(shakes fist...)