Replace hardware
I'd be happy to find a good handle set and lock for you, but I'd like a few more pictures of possible. To start, please show me the interior side handle and the mortise lock that the handles engage with. I'd also like you to tell me the distance between the two screw holes, center-to-center. Thanks!
Thanks for getting back to us. We can't make out exact dimensions from photos but you may be able to use our 82-030 handle set. Take a look and confirm that the 3-15/16" hole spacing shown below matches yours. We also offer the 82-249 keeper.
As for your mortise lock, we would still need to see a photo of the portion of the lock where the hooks extend from to narrow down your options.