Technical ID missing '54 Ranch Wagon door striker part

I'm starting to figure out what parts never came back when I rescued my wagon from the body guy who stopped working on it for 4 months. Anyway, I figured out I was missing the left hand door striker BA-7022009-A which I was able to order from Concours. But I'm at a loss as to what these parts are. I assume that they are some type of door latch part and it appears that here should be 4. Two left and two right. None have a part number on them and I can't find any from any of the usual sources. Can anyone shed some light on this for me? And a diagram of the door striker/latch mechanism would be a plus. TIA

 

The HAMB comes through in record time. Never thought they might be for the tailgate/rear window.