Need help finding correct latch

Hello,

It looks like the internal locking portion may be missing. If so, we can't say what the door originally used, but we do offer the 82-005 surface-mounted handle set. Review the specifications and installation video below to see what you think. Note that you may need to make new installation holes if the 4-15/16" hole spacing differs from your original handle. If so, be careful not to hit the glass. You'll also need to determine if you have room in the door jamb to install one of the keepers that come with the 82-005. Thanks for posting! 

Alternate image for 82-005

Demonstration of the lock interacting with the included keeper.