A pair of mid-century trough/windowsill Willy Guhl planters

A pair of mid-century trough Willy Guhl planters.
Willy Guhl is best known for his fibre cement outdoor range which includes the loop chair and the diablo planter. His designs are highly sort after and very hard to find in this size.
The planters are made from fibre cement and are meant to be used outside as they have drainage holes.
Dimensions - 
Width - 101 cm
Height - 18 cm
Width - 18 cm