I qualified with the Jack Brown Mask in 1953 when I came back from Korea
and started diving commercial in 1955 and was the first to put com in a JBM if you look at the photo you can see the bubble on the JBM I'm 75 now and still dive I have an inland salvage barge and am cleaning up after IKE Maby I use the JBM jest for old time sake and get out of the hat Joe Savoie and I built in his back yard in 1961 and I have used it ever since