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The Ongoing Mystery Aircraft Thread Part Deux.

Thanks Chris:encouragement:
Next challenge. Maybe the C172 was taken as example?
 

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Hi fabulousfour:very_drunk:
Fully correct. I have her as Waldo. Must be my version of Google translate.
Would you have any further info, such as name of designer/builder?.
She seems to have one of my inline engines.

Your turn, please
 
Sorry, Walter, I don't have any further information about the Valdo/Waldo.
I only found some pictures at russianplanes.net and airliners.net

Next mystery is a biplane again.
 

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Thanks Robert. Sorry for the delay!

Another biplane that came a little earlier than the Caspar.

ONHZ3SV.jpg
 
Right after WWI there was little interest in their designs so the two man team went their separate ways, one in the automobile industry and the other as a dentist!

Hall-Scott engine.
 
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