Below is the central part (2.5 ins x 3.5 ins) of an autochrome slide
measuring about 3.5 ins x 4.5 ins. Most of the border of the slide
was almost black.
This is, perhaps,
not the best slide to illustrate the autochrome process, being
predominantly pink, but it is currently  my only autochrome slide
photographer and the date of the photograph are not know
permission to reproduce, please contact firstname.lastname@example.org