I love this photo.
Henry Essenhigh Corke (1883-1919); Autochrome
Photo from approx. 1910.
Collection of National Media Museum
This is an autochrome - an early colour process which used a glass plate covered in microscopic, red, green and blue grains of potato starch.
An (unattributed) image that manages to be delightful in half a dozen different ways. Courtesy group fashion-history blog La Mode Illustree.
Two self-portraits from painter George F. Watts, at age 17 (in 1834) and at age 77.