Mum's wedding ring

by bobby
(thanet . kent. england)

would like to know what the hallmark says in my late mums wedding ring please ....1st is oblong box with F&S inside..2nd is square box and inside is a turban shape. 3rd is sq box with 22 in. 4th is smaller sq with h in. 5th is M. the ring is wearing away in places annd is out of shape. thank you.