1Entry Mortise Lock Norwalk Lock Nor-882September 28, 2021/in Entry Door Mortise Locks Ornate Plain Door Lock, Norwalk Lock Co./by adminEntry mortise lock by Norwalk Lock Co. in the Butterfly pattern in nice working condition. Cast bronze face plate measures 1-1/4″ x 6-9/16″. Back set is 3-1/8″, and mortise takes a 1/4″ spindle.