Sash Pivot replacements

Hi,

I was hoping you could help identify this double hung window manufacturer, hoping to get some replacement Sash Pivot pieces. Included other parts from same window that might help identify the manufacture. The Sash Pivot rough dimensions as follows:

W 3/8"
H 1 7/16"
D 1/8"
Pin Height 5/8"

Two screw holes above Pin

I know I have some Marvin windows, but the sash locks are different and easily identified. This window has no labels/stickers/stamps, and none of the hardware appears to have any IDs either even though they look pretty unique. Checked the frame and all four sides of the sash and nothing. Any help would be greatly appreciated.

Thanks