I might actually have one. I had to replace the whole cassette on the Ascot (my spare P38) and kept the glass. I gave it to a friend who was restoring a Classic LSE but we found that the Classic glass is flatter so it was no good for him. This was a couple of years ago and he was able to get a new seal then but I'm pretty sure he still has the P38 glass in his workshop. I'll give him a call and ask. No idea how it could be got to Italy in one piece though.....