Imperial Window Handle

This is a handle for my large Imperial Windows (model style unknown, condo was built in 1966) in my condo. It is held in with 2 screws into the window frame. Inside the faux wood handle is a metal plate (which you can see in the picture) depress it and it unclips from the frame. Which is how the window locks. I have been looking but been unable to find. I need 4, for some reason the originals were removed. The current ones still work fine as there are basically no moving parts. I don't need locking ones as I am on the 8th floor.

Appreciate any assistance.
Scott