Says:
ポケットモンスター (Poketto Monsutā) - Pocket Monsters
ゴールド＆シルバー (Gōrudo & Shirubā) - Gold & Silver
アクセサリー (Akusesarī) - Accessory
10 types of Gold and Silver
Target age: 6 years and older
The ST mark shows 0 (2000).
Pokémon Gold & Silver released Nov, 1999 in Japan.
The key company responsible for bringing this specific product to the Japanese market appears to be Yumeito Co., Ltd. (株式会社ユーメイト)
One of a few companies to later merge to become Takara Tomy Arts.