Thanks for posting! We do not carry an exact replacement match for your sash vent latch but our 26-122 may be worth considering as a replacement. Take a look over the dimensions and compare them to determine if this would work as a suitable alternative. The overall depth of this latch is 5/8".
Please be aware that these latches will only be available for a limited time as they are only available while supplies last.
It's a bit difficult to tell the exact dimension of your vent latch from the photo, but I can tell that it is well under 2". The next best replacement recommendation we have is the 26-338 Sash Stop. While there is a different in design, as long as their general size is the same then they should be able to function the same as the existing stamp.
Our entire selection of sash stop/vent latches can be viewed here.