WILLIAM
B. KERR & Co (Founded 1855)
Art Nouveau Mermaid & Lobster
Buckle 
Silver & pearl
Length: 7.3 Width: 8.8cm (2.8 x 3.5 ins)
Marked: Hammer mark with three crosses
‘Sterling’ & ‘Patent appl’d for’
Numbered: ‘1238’
USA. Circa 1900
Fitted case
Literature: cf. Art Nouveau Jewelry
Vivienne Becker, 1985, pl.297, 299,p.222