Webster Signature Database - Suggest Correction

Signature Maker Instruments Comments Location References
HAHN, P.M., UND J.C. SCHUSTER Germany, c.1780, MIM Astronomical Clock = DRE; Quadrant Scale = DRE. Phillip Mattäus Hann and Joh. Christ. Schuster. Kornwesteim. Grötzsch 2.

E-mail address:
Explain your correction here:
To protect against spam entries,
please type the sum of 5 and 2 into this box
(i.e. the number between 6 and 8):