Pretty confident it's really a Austro-Daimler frame isn't? Not sure about its model. Couldn't find any example of these dropouts. Can anyone give me a help?

The bike shop had no glue about the bike, and apparently it has been painted several times. I couldn't find any track of its serial number as well.
It's mounted as a single bike with a coaster brake from Czech Republic.

I've bought it out of luck in Brazil.
Any guess about how much it worth? Thanks in advance





>>> Luggs seat



>>> Fork dropout (maybe it's not an original A-D fork?!)




>>> Rear dropout and coaster brake




>>> Lugs/Icon