Trying to find Keeper for our sliding glass door.

A home owner from Dardenne Prairie, Mo 63368 says:
We purchased this home 2 years ago and it has never had the keeper. I cannot find the brand of the door. I have attached pics of the striker and the jam of where the keeper would attach. Could you please recommend which keeper might work?
User submitted photos of patio door hardware.
Profile picture of Paul
Paul from SWISCO responded:
I'm having trouble making out what mortise lock it is you have. The stickers don't help all that much, I'm afraid, but seeing the mortise lock would be a big help. If you can, please show us a front-on shot of the mortise lock in your third picture. Please also show us the space in the door jamb where the old missing keeper once installed. I will also need to know the installation hole spacing of the old keeper.
A quick learner from Dardenne Prairie, Mo 63368 says:
Please the attached pics which provide the information you requested.

Thanks again for you help.
User submitted photos of patio door hardware.
Profile picture of Paul
Paul from SWISCO responded:

Hmmm... the hole spacing of your keeper is very peculiar. We can't find anything quite like it. Could you perhaps use something like our 89-021D? Double check your hole spacing just to be sure.

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