Lost Bb 5th valve slide for Neptune

[Locky]

Out there somewhere is a Bb slide desperate to be reunited with my Rotary Neptune. It may well be holed up with the smaller of the two demountable leadpipes - the larger pipe is permanently affixed to the bell on the instrument. I am interested in the slide and prepared to give a place of refuge to the leadpipe if they are inseparable! I think my Neptune is one of the earlier ones and now in slightly tatty raw brass - I suspect it has spent some of its life on the other side of the pond. Please have a look in those nooks & crannies & pm me if you can help.

Thanks Locky