Gold Sentimental Late Victorian Brooch

This is a late Victorian or early Edwardian Sentimental brooch in 9ct gold.
The Victorians loved to give presents that had messages. Here the ivy leaves represent either friendship or memories remain evergreen or marriage. Etched onto the shield is a swallow. This symbolizes a child or mother hood.
This handmade brooch has at some point had a repair on the C - clasp, it is replaced with a silver metal pin. The clasp is loose and the replacement pin is in need of tightening

The markings on the reverse of the brooch has a line with "9 575 (anchor on side) b". (9ct gold, made in Birmingham 1901)
Also at one side is I think "Sil" (this may refer to the replacement pin?)

This dainty antique brooch measures about 4 cm across with the shield just 1.5 cm

Was this brooch given by a Victorian husband to his wife on their marriage, the birth of a child or as a sad everlasting memory of a loved one?