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Signature	Maker	Instruments	Comments	Location	References
WILLEBRAND, JOHANN MARTIN	Germany, fl.1720-26, MIM	Universal Ring Sundials = NMM, INN, STU; Equatorial Sundials = BEK, MUN; Augsburg-type Sundials = AUG (4), Evans Coll., etc; Crescent Sundial = AUG.	probably the son of Johann Willebrand; Willebrand made a miniature Augsburg-type sundial in gold to fit the back of a pocket watch by Nicholas Della at TIM.	Augsburg.	Zinner 1; Bobinger 2; NMM 2; Evans 1; Syndram; RSW.
WILLEBRAND, JOHANN MARTIN	Germany, fl.1720-26, MIM	Universal Ring Sundials = NMM, INN, STU; Equatorial Sundials = BEK, MUN; Augsburg-type Sundials = AUG (4), Evans Coll., etc; Crescent Sundial = AUG.	probably the son of Johann Willebrand; Willebrand made a miniature Augsburg-type sundial in gold to fit the back of a pocket watch by Nicholas Della at TIM.	Augsburg.	Zinner 1; Bobinger 2; NMM 2; Evans 1; Syndram; RSW.

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