Black white invisible retractable Japanese table

Black Japanese style coffee table. Retractable from 90 cm to 130 cm. Black & white when open. The extension is done manually by sliding action and 8 unused surfaces (4 white ones appear) for reception etc... See photos 🤳 The article is heavy: will you say that I did not warn you!?. (Ext. photos from the Canebière antiques market.)