C. Schlevogt or H. Hoffmann would be my bet, though I don't immediately recognise it as a Hoffmann shape. As with many of these Czech pieces date could be anytime from 1930s-present, though the colour & finish of yours look good and
might suggest an earlier date .
Another thing I'd say is that the stopper doesn't look like a great match stylistically & I wonder if it's a replacement? How good is the fit & colour match?