A Dutch tortoise-shell spoon-box with silver teaspoons

A Dutch tortoise-shell spoon-box with silver teaspoons
The Netherlands, mid 19th Century; maker's mark J.M. van Kempen & Zonen, Voorschoten, 1884 (spoons)
Oblong, on four wooden ball supports, with wavy sides, shaped lock with fitting key, the hinged glass cover with ivory border and tortoise-shell sides, lined with violet velvet and a mirror bottom, containing twelve teaspoons, a pair of sugar-tongues, a caddy-spoon and a tea-strainer, each with beaded border
marked on handles