Orientable spotlight brass Hustadt Leuchten

I am selling a semi-recessed, adjustable spotlight in brass, model Eyeball 7455/011 from the brand Hustadt Leuchten, Germany, from the 1970s, vintage retro decor. In very good condition. Porcelain socket for E27 screw bulb, LED or incandescent. Recess depth 8.5 cm. Recess cut-out diameter 11 cm. Flange diameter 14.5 cm. Ball opening diameter 6.6 cm for bulb. Sphere overhang of 4 cm.