Folding-plate Cameras 4.5x6cm (various)

nice collection, 10 German cameras all in rare size 4.5x6cm: Voigtlaender Bergheil no.23121 with Kollinear III 6.8/8cm no.137996 in Compur, Ernemann Heag XV no.157861 (1907) with Tessar 6.3/9cm no.115886 (very rare), Ernemann Heag XV no.522048 (1918) with Detektiv-Aplanat 6.8/80mm, Ernemann Heag XV no.RK 383422 (1916) with Doppel-Anastigmat 5.4/80mm in Compound, Ica Atom square no.F 19191 with Tessar 6.3/6.5cm no.215923, Ica Victrix no.E 82569 with Novar 6.8/7.5cm in Compound, Ica Victrix no.E 49854 with Hekla 6.8/7.5cm in Ica shutter, Ica Victrix no.G 20028 with Hekla 6.8/7.5cm in Ica shutter, Steinheil folding camera no.249 with Unofocal 4.5/7.5cm in IBSO shutter, Erko with Erkos Anastigmat Fotar 4.5/75mm in Vero shutter (not listed in Mc Keown or Kadlubek)