Ephemera › HS 2575 - Invoice from Blake & Mackenzie Limited, Printers, Stationers & Horticultural Publishers, 51-67 Islington, Liverpool 1944 Image 1 of 1 HS 2575 - Invoice from Blake & Mackenzie Limited, Printers, Stationers & Horticultural Publishers, 51-67 Islington, Liverpool 1944 £23.00 Established 1850. Posted to Honnors Ltd, 19 Earl street, Maidstone, with 1d. meter mark on reverse. Two filing holes. Add To Cart Added! Established 1850. Posted to Honnors Ltd, 19 Earl street, Maidstone, with 1d. meter mark on reverse. Two filing holes.