Bracketless shelves
Are made with a strong skeletal mount that is attached to the wall, then shelf slips over it, to hide the mount.
(Below) 2"x14"x10" bracketless shelf with 1"x10"x20" bracketless shelves in the back ground
(below) two 1"x8"x24" and one 1"x8"x52" walnut shelves
(below) 1 1/8"x24"X24" corner shelves
brackless wine bottle shelf (below)