Materials: vitreous enamel, solid 22k gold (tested with eletronic gold tester & nitric-muriatic acid); later brooch fittings are solid 18k gold
Workmanship origin: French
Weight: 16.5 grams net weight (slides are 4.6 and 4.6 g each; latter fittings are 4.2 g; bracelet fitting 3.1 g)
Marks: [owl] French guarantee mark for solid gold, applied to prior-existing second-hand items at time of assay.
Dimension of slides: 34 x 23.8 mm (slide 1), 33 x 23.8 mm (slide 2)
Dimension of enameled oval: 30 x 23.8 mm (both)
Condition: overall well-preserved for the age. Some minor age flaws: a new light scratches to the enamel surface, including four tiny areas of later touch-up restoration. The gold body is worn in some areas.