Schwarz 1920's / 1930's Wood Toy Scooter Tricycle Trike Germany. The left rear wheel is somewhat wobbly, the other two wheels seem fine.
It looks like a washer is missing on the inside section of the wobbly wheel, giving it more space and causing it to wobble. The seat shifts a bit, but I don't want to attempt tightening anything. The steering mechanism squeaks when turning and the wheels squeak when in motion.
There's also an old piece of masking tape on the front bar, I'm not sure why it's there. Most of these things seem easily fixable and if someone wanted to restore this to its old glory it could be a fantastic show piece. If specific close-up pictures are needed message me.