Limited hot edition etching 'Were they Granny Ethel's?'

This is a limited edition etching and aquatint of some very old pearls found in the little box also depicted, left to me by my aunt. I was hot wondering if they had originally belonged to my Granny Ethel.
It is from an edition of 50. It measures 17 x 12.5cms and is printed on Somerset 300gsm cream paper.