Sliding glass door lock

I am looking for a replacement lock mechanism for my sliding glass door which were probably installed about 1957. They were made by Metal Industries Type SGD Class B1 Model # UB01121 (the B might be an 8) and Series M11. The distance between the screw holes is 6-5/8". There is a push up/down open/lock mechanism and we have a separate wooden handle which is screwed into the two holes. There is no key and the outside part of the locking mechanism is just an inset flush handle. I think I found a similar part on your website, part 82-008. Mine also locks in the downward position but there is no circular night lock, just the open/locked positions. The distance from the bottom of the lock to the locking mechanism is apx 1-3/4" about one third up the height. I just want to be sure as I know there are two similar parts with the lock in slightly different places. I hope these photos clarify what I need