Rare Vintage Orlandini UNOAERRE 18K Gold Mother and Child Pendant with Chain

Rare Orlandini for Unoaerre 18K yellow gold vintage mother and child pendant with 18K gold Italian box chain.
Pendant fully hallmarked and engraved “ Vostra Gullia” (see images). Chain is marked 18K ITALY.
Pendant: 18 mm wide x 28 mm long (including bail). Weight: 4.2 grams
Chain: 16 inch long, 1.2 mm wide. Weight: 2.7 grams
Total weight of the pendant and chain: 6.9 grams