Pella screen insert latch

I ordered the wrong replacement latches.
The photos above are of the original latch (and the screens they came from) that needs to be replaced.
The screens came with the Pella double hung windows I had installed approximately 30 years ago.
The windows are still good but many of the screen latches have fallen out and lost.
I hope you can replace the latches!
 
Thanks so much.
Eileen