Classification of jewellery; groups of fineness and thickness of coverings of metals
€24.39
Classification of jewellery; types of chains
€34.30
Classification of jewellery; colours
Classification of jewellery; groups of goods and groups of articles
Classification of jewellery; groups of materials
Caractéristiques générales relatives aux revêtements d'alliages d'or des boîtes de montres et des pièces d'horlogerie
€25.00
Diamond pyramid hardness numbers
€269.00
Dimensions of instrument jewels
