Ninomiya transparent enamels, Blues on fine silver in direct, over flux, over white, over opal and over gold foil N55, N56, N57, N58, L61A, L63, L64A // L64, L65, ND65, L66, L69, L70, L71, L72 // L73, L74, L75, L76, L77, L78, L79