Hi Ken,
Not sure what you are trying to show here because you are mixing up 3 different makers.
I agree that the hollow nickel silver/tombak P&L is the earliest. But as far as we know the line stops there for P&L since they lost their license.
Frank and Reif has no known hollow tombak or zinc GABs. For all we know, they started with solid, zinc production and that those are the marked ones you show (first solid back, then semi-hollow. Both marked).
As far as Schickle goes, they seem to follow P&L; first with a hollow NS/Tombak GAB. They switched to zinc hollow production, but it must have been very brief before they lost their license too in early 1941 because the zinc hollow Shickles are VERY RARE!.
It doesn't make any sense to me to put a hollow zinc Schickle after the solid zinc F&R. Not only are they different makers, but the production pattern doesn't follow convention (hollow tombak to hollow zinc to solid zinc).
Tom
Not sure what you are trying to show here because you are mixing up 3 different makers.
I agree that the hollow nickel silver/tombak P&L is the earliest. But as far as we know the line stops there for P&L since they lost their license.
Frank and Reif has no known hollow tombak or zinc GABs. For all we know, they started with solid, zinc production and that those are the marked ones you show (first solid back, then semi-hollow. Both marked).
As far as Schickle goes, they seem to follow P&L; first with a hollow NS/Tombak GAB. They switched to zinc hollow production, but it must have been very brief before they lost their license too in early 1941 because the zinc hollow Shickles are VERY RARE!.
It doesn't make any sense to me to put a hollow zinc Schickle after the solid zinc F&R. Not only are they different makers, but the production pattern doesn't follow convention (hollow tombak to hollow zinc to solid zinc).
Tom
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