Austria: Airmail labels 2

Here is a rare airmail labels from Austria. This one is not listed in catalog yet but it's very similar to AUT-C-1 just lettering modified.

Year: approx. 1930. Gummed. Günter Mair's catalogue no: - AUT-C-?, perforated 11 ½ , sheets, black/light grey-blue, 5*****