I know I'm going to regret posting this. In my 50 year box I found this 1945 Lincoln with what looks like an odd die clash. I know I've already has four cups of Joe, but here goes. On Abe's throat their looks to be a letter "B" in a font that only somewhat resembles the "B" in Liberty, and if you stare at it long enough you can see a letter "S" directly below it. I apologize in advance for this post. Lou
If I look hard enough I see a sideways 7 but I don’t see a B or an S and we all know what that stands for. Then again, I don’t drink coffee.
I should mention you can't squint and concentrate too hard. If you enlarge it and just focus in a bit you can see it. Someday, when I get a better scope I'll see if I can get a good pic. Lou
OK, not trying to be a smart ass here. Obviously you are not a diver. FYI, The gas in scuba diving tanks is not pure oxygen because it would become toxic under pressure. The gas in scuba divers’ tanks is ‘air.’ That’s right, good old regular air, exactly the same as what you are breathing now. Air is made up of 21% oxygen and 79% nitrogen. Now you may get certified. Lou
Now, now, not pure nitrogen 79% nitrogen and 21% oxygen. Get the mixture right or you could get the bends.