Mechanism

Hello. Thank you for submitting your request to us. Before we can recommend a replacement lock, could we see another photo showing the mortise lock from the front view? We'd also like for you to give us as many detailed measurements of the lock as possible. This will greater our chances in finding a match. Thank you. 

Thank you for providing more photos to us. Have a look at our 82-239 mortise lock. This does not include a face plate, however, you can reuse your original one if you like. If you don't want to reuse your face plate, then you can have a look and consider going with our 82-265. Look over both parts mentioned and see what you think.

As long as our measurements match up with yours, you should be fine. I would suggest reviewing our measurements listed to confirm they line up with yours. If everything looks good, then you should be ok to go.