ANTHONY'S NONPAREIL SHUTTER
Marketed by E. & H.T. Anthony & Company 1891 - 1895
The name "Nonpareil" originates from the French meaning "without equal". This would not be the first use of the Nonpareil name, as E. & H.T. Anthony marketed the Nonpareil Plate in 1871, manufactured by John Dean & Company of Worcester, Massachusetts.
Source: U.S. Patent and Trademark Office
(text and images pending)