Screen Retainer for Tilt-out Window

HI, I've been rejuvenating some 30+ year old vinyl tilt out windows and have ordered some spring balances and tilt latches from you.  I'm now tackling the screens.  The screens are retained with two clips (see photos) that attach to the bottom of the screen inset.  The screen is inserted into a slot on the top and slid over the retainer clips at the bottom to secure it in place.  Have you seen anything like this, carry them, and/or can you tell me how I might source them.    Thank you,  Tom