These first four ocarinas were made by various companies for Meissen and they used the famous blue onion pattern. The first one has a tuning slide.

Heinrich Fiehn ES 11 1/2

Heinrich Fiehn B 7

Heinrich Fiehn C 6

Heinrich Fiehn C 6

Heinrich Fiehn Cis 5 1/2

Heinrich Fiehn C 5 1/2

Heinrich Fiehn D 5

Heinrich Fiehn G 3

Heinrich Fiehn A 2 1/2

Heinrich Fiehn B 2

EWA G 9

EWA C 6

EWA C 6

EWA G 3

Guido Bondi C 13

The makers mark on this one is illegible but the size is C 13

Rudolf Teschner

I haven’t been able to find the maker of this ocarina from the makers mark yet

M. Hohner E