Need replace lock. I have handle still. The latch broke on the lock and i no longer have mortoise lock. Can you help identify replacement part. Cant find at hardware store

It's hard to say for certain without seeing any of the original hardware. To help me make a good recommendation, can you please show me the associated handle? I would also like to know the distance between the installation holes for the mortise lock, from the center of each hole. Many thanks!