
The spoons are from left to right.
Mark: PR, lion passant, crowned leopard's head and 1774-75 (worn but can be interpreted, not maybe well in picture)

Mark: ? and RS (no other marks)

Mark: lion passant, 1790-91, duty mark and I? (last letter might be F so could it be John Fayle; could also be something else like T)

Mark: lion passant and DC (no other marks).

Knowledge on any of them would be very much appreciated. Even an estimate on a time period would be nice to know when exact year can not be given due to missing mark.
Regards,
Juhana
.