Silver marks in the Ineson-Bissell Collection, Winterthur, April 1970.
Contributors: Henry Francis du Pont Winterthur Museum.
Publisher: s.n
Published: 1970
Place of publication: [Winterthur?
Language: eng
Number of pages: 10
Subjects: Hallmarks.
Notes: Reproduced from typewritten copy.

Includes Addenda, dated April 1971, and April 1973.