This is a complete hardware set that was removed from the LaSalle Hotel in Chicago, Ill. This set has an indicator for both locked and unlocked that is incorporated into the turn piece (a similar feature that is still in use today with hardware).
This is a complete hardware set that was removed from the LaSalle Hotel in Chicago, Ill. This set has an indicator for both locked and unlocked that is incorporated into the turn piece (a similar feature that is still in use today with hardware).