http://www.925-1000.com/silverplate_S.html
.............(Chose the St-Sw option)
Now this month, I copied similar knight chess piece marks from some other spoons, though these figural marks are a little “pseudo phoenix”. “SL” was not an associated mark, but there were “WS” marks, maybe the William Suckling founder of Suckling Ltd.
..........Peck's Trades Directory of Birmingham, 1896-97
.........................Electroplated Wares: Suckling William, 35 Albion Street.

Has anyone else noted this figural mark, or has more knowledge of it or have a view on my suggestion?
Fishless