Top of handle looks like 2265 or 2263. Bottom says Sash controls, Ferndale, MI

Both right side and the left side of the interior sliding doors have broken off around the screw heads.
Sash controls in ferndale, MI is listed as manufacturer. We need to replace them.
These appear to be identical to the handle sets originally installed

Seems to match except our handle sets (right and left) are not keyed