Truth 14.17 Casement Hinge-Pair
The 14.17 is not that popular of a hinge. But if your track measures 14" than this is probably what you have. The hinge has a stack height of 7/16". The outside screw holes measure 12-3/8" on center. We sometimes find the number 30986 on the arm and 41498 and 41499 on the stainless steel track.
This hinge is sold in pairs (one top and one bottom). If your window is the opposite hand, the top hinge goes to the bottom and the bottom hinge goes to the top.