
It's hard to be sure, but it appears to be a 1958 model.
Patrick Baptist of the Karmann-Ghia Lowlight Registry has recently taken it upon himself to compile a list of all remaining Lawrence coupes. From his research I've already been able to determine that the Lawrence coupe that I once considered buying still exists, probably somewhere in Japan. You can follow his progress here and here. I wonder if this sunroof coupe is still out there anywhere?