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Signature	Maker	Instruments	Comments	Location	References
DUHAMEL 1	France, 18th Century, MIM OIM	Sectors = Soth. 12/12/55, Huelsmann Coll., Koller May, 1966; Sundial = Drouot 11/14/68; Folding Rule = Koller May, 1966; Set of Drawing Instruments, case = DEU.	made lenses and Butterfield-type sundials.	Paris.	Michel 1 and 3; Evans 1; Nachet; Wheatland 2; Syndram; RSW.
DUHAMEL 1	France, 18th Century, MIM OIM	Sectors = Soth. 12/12/55, Huelsmann Coll., Koller May, 1966; Sundial = Drouot 11/14/68; Folding Rule = Koller May, 1966; Set of Drawing Instruments, case = DEU.	made lenses and Butterfield-type sundials.	Paris.	Michel 1 and 3; Evans 1; Nachet; Wheatland 2; Syndram; RSW.

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