Aldevis, Sorry, I am not recieving any notifications for some reason, the earlier bells were more slender and elegant than the later ones, I could put a later bell on an old clarinet but then it would not be the same and like Saxophonists, some Clarinettists are absolute purists and would notice the difference. Yes some dealers do put later Bells on, but I feel it is a little devious, and perhaps I am a little too honest for my own good.
The difference is marginal, but they are most certainly different in shape. I shall try and find some photos to show this.
Prof: No, not a good one anyhow, I do have a trade account with Dawkes/Windcraft but they are asking silly money for Bells and they are all too late, though I suppose they could have an earlier one as they have boxes of old stock.