A Hollis M1 diving mask is sold.
I think about the quality and workmanship of this mask I don't need to say anything great. It is often referred to as the best mask ever.
I burned out this mask and additionally treated it with Sea Buff. About two weeks ago I did a dive with the mask, no fogging.
Personally, I find 2 glass masks simply more comfortable, so the Hollis is delivered. It is simply too bad to lie around.
As always, private sale applies, neither return nor guarantee.