Need to find this Pivot Bar. Do you have it?

Thanks for writing in. While I can't say for certain what you need without seeing an undamaged pivot bar, the tip you show and the fact its a Silverline window suggests to me you need either our 26-412 and 26-400. Look these over and let me know what you think.

Thanks for getting back to me, curious Handy Person. I wouldn't worry too much about the title 'Top Sash Pivot Bar' regarding the 26-400. It is quite possible that this pivot bar might be used for both the upper and lower sash in a double-hung window. Generally, it's better to determine if the overall style of the pivot bar and the hole spacing matches your old pivot bar. 

Now, let me clarify hole spacing with these pivot bars. Specifically, you want to make sure the distance between at least one of the mounting holes (from the very center) to the tip of the pivot bar that fits into the pivot shoe matches your old pivot bar. You only need to use one screw hole for these pivot bars to work. Let me know if this makes sense for you.