RARE CDV Photo Doctor Constantine Hering - Pioneer of Homeopathic Medicine sign That part number on the

That part number on the back is in light pencil

one holding a doll and the other a cat

Signed in ink along the bottom

1850s Ambrotype of two cute siblings

"dad" not needing to be ID'd on this or the other images by the writer

RARE CDV Photo Doctor Constantine Hering - Pioneer of Homeopathic Medicine sign That part number on theOriginal 1870s CDV Photo of Professor Constantine J. Hering (January 1, 1800 July 23, 1880) , physician and early pioneer of homeopathy. Studio imprint on the back is Trask of Philadelphia. CDV is about 4" x 2. 5" and is in very good or better antique condition. A very rare image, very unlikely to come up again anytime soon! Boxed & signed shipping.