Vtg Antique door mortise lock latch #4

Description

Antique  steel and brass mortise lock
Patents 1880s
Could be cleaned up and/or polished but the well-developed vintage patina will be left as-is
no key - the lock mechanism looks ok
latch withdrawal working - could use lube
Steel lock face plate 5-5/8" x 1"
mortise depth 3 "
backset measurement (distance from middle of knob hole to face edge) 2 1/4"
Any questions please feel free to ask Thank you