Window parts broken

Need help identifying this window . As you can see where the bottom of the window goes into the pivot piece on the bottom of spring the plastic is broken. Also both plastic pins on top of the window are broken on the top of the lower sash . These pins retract when you slide the pins back . The slide springs are broken as well. I'll guess these windows are at least 25 years old. On the label from the window frame there is no company name. Just a lot of numbers.
20542632. H.D.
40ws336572 l l NHCHS
1/7. Z:01
F1026310

Dave thanks for getting back to me. I need to check the pivot bars on the bottom of the sash. The bar on 1 side came out I was able to slide in back in. Do you think I need to replace the pivot bar assembly s ?