19thC. Marble Mantle-Keene,NH History, quality marble fireplace surround and mantle with cast iron vent insert made by "JL Jackson, NY", dated 1853, 59 1/2"W (mantle shelf) x 44 1/2"T, opening 36"W x 35 1/2" (top of curved opening), complete and ready to install. Prov: came from a victorian home on Court Street, Keene, NH