(k) punched in base c.: SD (monogram) (lion passant) (leopard's head) B / 121 (l) punched inside u.c.: (lion passant) B printed on front cover of accompanying book c.: Stuart Devlin (Devlin underlined) inscribed in black ballpoint pen on page 1 of accompanying book c.: 121 printed in gold (vertically) on paper label on outside of lid of accompanying box c.: Stuart Devlin (Devlin underlined) / LONDON ENGLAND.