Hallmarked: 18ct Gold 
Date: 1909
Assay Office: Birmingham 
Makers Mark: CFS
Size: UK  J US 5  EU 50
Weight: 2.3g
Width: 6.5mm
Sapphire: 4.5mm,  2 x 1.8mm
Diamonds: 2 x 1.8mm
Good clean Vintage condition. Resizing available.