This CDV is of a young women in a sheer dress with some lovely details including her hair, bracelets and watch & chain. A handwritten note on the back reads "Mrs Ma... (Mackline?) was Miss Smith my god mother". The photographer is Prestwich of Castle Street, Reading. I haven't been able to find out much about the photographer other than he was in business in 1863 which ties in well with my dating of the CDV of around 1863-65.