Four doll socket heads

Four doll socket heads, comparison three bisque examples marked for Armand Marseille 390 6, Heubach Koppelsdorf 250 2 (with brown glass sleeping eyes), and a Theodor Recknagel head 24 Germany R11/0A, and a composition head with blue glass sleeping eyes marked EVF 9 (Est. plus 21% premium inc. VAT)