This one I purchased in a shop in Paeroa at the same time as the three unknown men. Apart from some water damage on the cardboard backing the photo is in perfect condition.
Subject: Four Generations
Photographer: Hampton's Studio, 11 Victoria Square, Christchurch, NZ
Found: Paeroa, New Zealand
Photo on cardboard and then put into a cardboard folder.
Handwritten inside: Aunty Grace & daughter May & child Judith. Also Grace's mother.
The only information I've found on Hampton's Studio so far is that they were operating in 1929. If anyone has any details on them please leave a comment.