81.3 ------7 3/8

This looks like just the latch portion of a more complete assembly. Would it be possible to see the whole latch assembly together in one shot? That would give me a better idea of what this is and whether we still carry a match. Written dimensions would also be a huge help if you can get them.

Storm window parts like this are very hard to come by these days, so it's no guarantee, but I will try my best.