This is a magnificent solid silver egg cup with its spoon.
French silver marks Minerve 1 ( 950/1000). Silver makers wellknown: CARDEILHAC & CHRISTOFLE.
The most famous pattern " RENAISSANCE " from CHRISTOFLE.
Part of a PDF Christofle catalog from 2015, about the RENAISSANCE cutlery:
"This flatware pattern is inspired by the Renaissance style with its trilobite and pierced tip, embellished with a putti head and decorated with leaves. It is entirely handmade in the Haute Orfévrerie workshops. The attention to detail in the decoration as well as the piercing technique used on the tip make this flatware one of the most prestigious models in the Christofle collection. Special orders (delivery time 3 months)".
Dimensions: Height: 5 cm Diameter: 4,5 cm and 4,2 cm Spoon: 12,5 x 2,4 cm.
Weight of the egg cup: 46,3 grammes
Weight of the egg spoon: 17,2 grammes
Weight for the 2 pieces: 63,5 grammes.
Period: 1900 - 1930
Perfect condition, nearly as new !
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Here is a converter inches / cm to help you with the dimensions: