Now that you have slowly got used to the pictures, you can see the whole fish move at once -- For me the Maerklin 4159 is the Winner -- Which is yours?? Enjoy Arnold 
#1 Bing Poppet Valve
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#2 Electric Motor with Bing Saw
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#3 DC Doll Steam Turbine
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#4 Maerklin Giant 4097/9
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#5 Maerklin electric Hotair
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#6 2-Cyl. Gas Motor
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#7 Schoenner with Windmill
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#8 Vertical Bischoff Style
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#9 Maerklin 4159/7/91
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They are all my favorites Arnold!
You have acquired a wonderful collection!
Ditto...
Each and every one of that haul is a gem, well done and congrats!
As Jan said , they are all highly desirable & unique.
All great pieces!
The Gas Motor, while a difficult choice for me, wins out in the end.
Gil
Arnold, Thanks for the posts showing your new finds.
I'd have to go with the 4159/7 and the gas motor a close second, then the hot air Marklin jumps out at me, it's simple but the base color really pops. But these are all very nice pieces.
I agree with you, but I think the larger vertical plant (#8) would be the most fun to run!
Any and all are my favorites.
I don't want to single out any of the machines. However, find it remarkable that you have such a well-preserved Doll steam turbine. These machines are very rare and then in such condition. Chapeau!