Automobile  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)