Jürgen Ehrt, Restorer and publicly certified expert for antique watches and clocks
German Society for Timekeeping
Association of Restorers
IHK, publicly certified and audited expert until 2021
Research Project Peter Henlein –participation as technical advisor
Examination and assessment of two Orpheus clocks from the 16th century.
Examination and assessment of a clock on an inclining ramp.