A Helping Hand. CHARMING ANONYMOUS FRENCH COLLOTYPE FROM A PHOTOGRAPH CIRCA 1910 4 1/2 X 6 1/2 inches
Collotype is a dichromate-based photographic process invented by Alphonse Poitevinin 1856 ,and used for large-volume mechanical printing before the introduction of cheaper offset lithography. It can produce results difficult to distinguish from metal-based photographic prints because of its microscopically fine reticulations which compose the image. (Wikipedia)
FRENCH COLLOTYPE. A Helping Hand.
- Product Code: A Helping Hand.. CHARMING FRENCH COLLOTYPE
- Availability: In Stock
- Ex Tax: $50.00