Thank you, Glen!
Meanwhile I think:
1) The 1930 Tango is described as 'hoch' (high) Could be the same mould and flared in 1934, when also the flower frog was added to it.
2) Guess, Walther were forced to give it a GERMAN name after 1933 agitate started, when art, literature, music, dance etc. from abroad got forbidden as harmful, 'entartete Kunst' :evil: :shock: