SHOP › 'Slate Sentinel' by Kim Harley-Griffiths Image 1 of 1 'Slate Sentinel' by Kim Harley-Griffiths £700.00 Slate Sentinel. Premium Crank, oxide.H 23 x D 30 x W23 Add To Cart Added! Slate Sentinel. Premium Crank, oxide.H 23 x D 30 x W23