How old was Sig Arno in Eins + Eins = Drei?

Veit HarlanVeit Harlan was 28 in Eins + Eins = Drei as 'Paul'.

Birthday: Fri, Sep 22 1899 –
Mon, Apr 13 1964

Georg AlexanderGeorg Alexander was 39 in Eins + Eins = Drei as 'Peter'.

Birthday: Tue, Apr 03 1888 –
Tue, Oct 30 1945

Claire RommerClaire Rommer was 23 in Eins + Eins = Drei as 'Anni'.

Birthday: Wed, Dec 07 1904 –
Mon, Aug 19 1996

Margarete KupferMargarete Kupfer was 46 in Eins + Eins = Drei as 'Annis Mutter'.

Birthday: Sun, Apr 10 1881 –
Mon, May 11 1953

Sig ArnoSig Arno was 31 in Eins + Eins = Drei as 'Doktor Planer'.

Birthday: Fri, Dec 27 1895 –
Sun, Aug 17 1975

Karl PlatenKarl Platen was 50 in Eins + Eins = Drei as 'Diener'.

Birthday: Mon, Mar 05 1877 –
Fri, Jul 04 1952

Lissy ArnaLissy Arna was 22 in Eins + Eins = Drei

Birthday: Tue, Dec 20 1904 –
Thu, Jan 23 1964

Felix BaschFelix Basch was 42 in Eins + Eins = Drei as 'Director'

Birthday: Wed, Sep 16 1885 –
Wed, May 17 1944

Edgar S. ZiesemerEdgar S. Ziesemer was 32 in Eins + Eins = Drei as 'Director of Photography'

Birthday: Thu, Jul 18 1895

Henry KosterHenry Koster was 22 in Eins + Eins = Drei as 'Writer'

Birthday: Mon, May 01 1905 –
Wed, Sep 21 1988

Béla BalázsBéla Balázs was 43 in Eins + Eins = Drei as 'Writer'

Birthday: Mon, Aug 04 1884 –
Tue, May 17 1949