Woodslasher - when you have a chance I would like to see some additional photos of the Leer Charger unit, and particularly of the amp gauge. I have an example of the charger myself but it does not have the gauge even though it does have a similar bracket where your gauge is attached.
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I have seen the gauge on another unit I saw at the PNW GTG last year.
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I am guessing your "Super 250" is in fact a 1-43 with the Super 250 full wrap and too cover.
Maint Sup - I have a Super LG6 and a 2-10G. I would have to say the 2-10G is more impressive but I had to change the carburetor on the Super LG6 as it had the Tillotson governed carburetor when I got it and I could never get it adjusted correctly. I may revisit that one day with a different carburetor, or just polish it up a bit and put it on display...
Super LG6
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2-10G
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The G70 has an additional brace that none of the other 10G saws have.
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Mark