Rare French 1890s Photographic Daguerrotype / Ambrotype 3x4.5 inch Vignette Mask / Filter set. Nouveau Degradateur No.1, 2 and 3
Paper degrading / vignetting mask sandwiched between glass. For softening the edges of ambrotype / daguerrotype portraits.
Possibly used in camera or when producing copies.
Rare item in excellent condition.
Full set of 3 in an unusual size.