Ambrotype of Sarah, Mary and Rebecca Shackleton. Date c1850-60s
The Ambrotype is a positive unique image on glass. The word comes from the Ancient Greek for “immortal” or “impression”). Introduced in the 1850s, like the Daguerrotype it replaced, it is viewed by reflected light.
Shackleton collection, County Kildare. Courtesy: Jonathan Shackleton, County Cavan,
Digital reproduction from Ambrotype.