3 Birds on a Branch Pearl 18ct Gold Brooch

Three birds sitting on a branch brooch; this is just the cutest thing ever!  Mummy, Daddy and Baby bird are all perched on the branch; their bodies are cultured pearls, the adult birds are 7mms, the baby is 4mms.  Each bird has a round head with ruby eyes and gold tail feathers.  Weight 3.7gms.  Measurements 4.5cm x 2cm (1 3/4″ x 3/4″). Tested as 18ct gold.  The pin at the back is fixed with a sliding lock and is in good working order and the brooch is in excellent vintage condition.  C.1950s.