Y52 Bonsai Display Stand, Wild Plant Display Stand, Solid Wood, Special Floorboard Display Stand, Ebony?

Special mountain and wild plant display stand, acquired about 40 years ago. Used several times at exhibitions.
Stylish base with a tasteful feel. Appears to be solid ebony wood.
Purchased at a high price in the past.
Size of one piece:
Width: approx. 30 cm
Depth: approx. 6 cm
Thickness: approx. 0.3 cm

Set of three pieces.
Display them as you wish.