Japanese Wooden Silk Thread Spool Itomaki Vtg Bobbin Frame Spinning Wheel JK816 kyozukue It has a rectangle shape

It has a rectangle shape and is written in kanji as 寿 (celebration)

so maybe there was some kind of accessory

Packed weight: 209 grams

Kanji on the lid back: congratulation

8 cm wide x 6

Japanese Wooden Silk Thread Spool Itomaki Vtg Bobbin Frame Spinning Wheel JK816 kyozukue It has a rectangle shapeJapanese Wooden Thread Spool This is a vintage Japanese spool, or itomaki, used to wind and store copious amounts of silk thread used in the production of kimono and other popular traditional textiles. The thread is simply wound around the frame like a modern bobbin. This item was used in tandem with a machine called "zakuri" which was typically hand powered and spun silk thread with quick efficiency. These spools can also be repurposed as stands for