But there is something with this horn I've never seen before. The top of the outer slide tubes has a smaller bore than the outer diameter of the (very short) stockings, which means the slide cannot be dropped (useful for long 7th position I guess!) as it won't go past the stockings! The top of the tubes is detachable (they are threaded) so that you can remove the outer slide when cleaning and/or lubricating.
I'm not sure about the maker of this instrument and this seems like a pretty distinctive feature so I'm wondering if anyone has seen that before.



