I also need keepers for LH and RH.
Comparing the 38-097 with your lock in the photo, I do see that yours is a lot less wide. I wasn't able to find a version that matches up to yours, though. The 38-097 is 2" wide like yours, but it has that extension on the base. Do you think it will be a problem when installed on your window, aside from aesthetics? The rest of the profile seems to match up to yours. I'm thinking yours might be an earlier, unavailable version of the 38-097.
I was afraid of that. I saw that you had a little lip there and I was hoping our part would stay within those bounds. Unfortunately, we haven't been able to find a closer match to your original lock. I am very sorry that we can't offer anything closer.
I think at this point your best bet would be to contact a store or professional near you who is familiar with homes in your area. They may be able to point you in the right direction. Assuming this is an older part, there may be a mom and pop type store near you who still has these in stock, but this is just a guess.
I'm sorry again that we can't help with this project.
Thank you! If you have any questions in the future, we will do our very best to help.