What kind of key for this old door (mortise lock)? - Home Improvement Stack Exchange

I am helping someone with a lost key for her bedroom (interior) door; the door hardware is probably about 100 years old. There is clearly a lock and a keyhole -- see photos. What sort of key would

Diverse use scenarios: Our mortise locks are suitable for interior or exterior doors. Bathroom, bedroom,living room ,dinning room etc. can bring

Toptotoo Mortise Lock Set for Interior Door, Vintage Antique Door Knobs with Lock and Skeleton Key, Old Door Knob Replacement Fits 1-3/8 in 1-3/4 in

lock - How to disassemble a simple door knob? - Home Improvement Stack Exchange

Blue Space Premium 10 Inch Cylindrical Plate Heavy Duty Door Lock - Main Door Lock Set with 3 Keys/Mortise Door Lock for Home/Office/Hotel (ALTROZ, Antique) : : Home Improvement

Replace broken antique lockset with Mortise Lock Set for Interior Door🚪: Akrilane Mortise interior door lock set is an ideal replacement for old-style

AKRILANE Mortise Lock Set Interior Door Antique & Vintage Style Knob with Keys (Chrome)

Key stuck halfway in door lock - Home Improvement Stack Exchange

What kind of lock set do I need for this door? - Home Improvement

Diverse use scenarios: Our mortise locks are suitable for interior or exterior doors. Bathroom, bedroom,living room ,dinning room etc. can bring

ToPToToo Mortise Lock Set for Interior Door, Vintage Antique Door Knobs with Lock and Skeleton Key, Old Door Knob Replacement Fits 1-3/8 in 1-3/4 in

Toptotoo Mortise Lock Set for Interior Door, Vintage Antique Door Knobs with Lock and Skeleton Key, Old Door Knob Replacement Fits 1-3/8 in 1-3/4 in, Brushed Satin Nickel Finish

lock - Key stuck in Security Door - Home Improvement Stack Exchange

tools - How to remove this lock in order to change the door knob

Atom Heavy Duty Mortise Door Lock for Bedroom, Living Room, Main Door, Brass Antique Finish, 3 Keys

Can I fix this lock so the outside handle is not always blocked

windows - What kind of lock is this, and how can I replace it? - Home Improvement Stack Exchange