Searching for Inperial sliding window

We unfortunately don't have a replacement for this type of window latch. It appears to be a very, very old style, so I don't believe this is something we can help with.

My recommendation is to contact a local hardware store that is familiar with homes in the area. They may have worked on this window before and can at least point you in the right direction.

I am sorry that we cannot be of more help.