Old photo - NOT amateur radio

When my mother's house was being cleared some years ago, we came across this old photo which we had never seen before. 

It was on a metal plate and is hand tinted. It probably dates from the 1800s and is possibly of my great great grandmother.

Very old photo - NOT amateur radio

We found this very old photo hand-tinted and on a metal plate whilst clearing my mum's house after she died many years ago. This lady (in mourning?) has family features and we think it dates from the mid 1800s. We think it could be a great great grandmother.