Door handle replacment

Thanks for your post! The door handle you have here can be replaced with the 82-080 Mortise Style Handle Set (the keyed version is the 82-081). While I am confident this should work for your repairs, be sure to carefully look over the dimensions shown below. You'll also want to be sure to compare the shape of the thumb lever.

If you are looking to replace the internal mortise lock, I'll need to see a photo to identify the correct replacement. This is sold separately from the handle set since there are a few that are compatible with it.

Dimensions for 82-080