3 astronomical A D Mittenzwey oculars by C.A. Steinheil Söhne Optical and Astronomical Works, Munich.
With a R.A.S. standard 1 ¼ inch thread brass screw mount.
A D 5 mm, A D 7 mm and A D 9 mm eyepieces.
See: C.A. Steinheil Söhne Price-List of Astronomical and Physical Instruments Munich: 1907. Page 14.