Guess who and when?

[RickI]

I would think single hose regulators showed up rarely on the whole in the mid 1960s. I didn't start to pay close attention myself until 1971. By then, double hose regulators were pretty much an oddity as far as common use in my part of Florida.

Ok, then I go back to my estimate of 1968 for the photo. We may never know for sure but it is interesting to try to figure it out from the clues in the shot.

 

[avidhunter]

At what point does the author of this thread post the answer?

 

[RickI]

I don't know the exact answer for the reason given below. My best guess is around 1968, opinions vary. Other ideas?

The photo was upstairs at UNEXSCO on Grand Bahama Island a few weeks back. Unfortunately, there was no label or year provided for when it was taken.

 

[AfterDark]

I would think single hose regulators showed up rarely on the whole in the mid 1960s. I didn't start to pay close attention myself until 1971. By then, double hose regulators were pretty much an oddity as far as common use in my part of Florida.

Ok, then I go back to my estimate of 1968 for the photo. We may never know for sure but it is interesting to try to figure it out from the clues in the shot.

Actually there were single hose regulators in a Sea Hunt episode with I think Beau as one of 2 kids diving in a blasting area. I think it was season 4 but I'm not home now and can't check.