Tilt window dow clips ?

A handy person from Slidell, LA says:
March 3, 2019
Need help identifying these clips/guide a. Windows are maybe 40 years old? If not, at least 20.
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Tom from SWISCO responded:
March 5, 2019

I'm afraid I've never seen this before. Do you know who made your window? Can you tell me the function of these clips? They're installed in the same position as a tilt latch, but I can't be sure if they work the same way. Thank you for any information you can give us.
A handy person from Slidell, LA says:
March 8, 2019
They act as a tilt clip, yes. Unfortunately, I do not k ow exactly when the window does were installed. I know my in-laws bought the house 19 years ago and I am 90% sure that no were replaced in the late 19 years. Also, I know that the house was built in 1980. So....i am guessing they were installed between 1980 and 1999. (I go thuthin' else...).

I do know that if this clip is broken, the top of the lower pane will swing into the house and this clip helps guide the lower pane to slide up/down through the channel.
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Tom from SWISCO responded:
March 11, 2019

I'm afraid I just haven't been able to find anything similar to this. You may want to consider substituting with a surface mount tilt latch. This will require drilling new holes, which can be tricky as you don't want to accidentally drill into the glass. We have a helpful video that walks you through the steps necessary. You can watch it below. You can also see our entire selection of surface mount tilt latches here.
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