Like new.
Large size.
Here's what Trumcor say:
Tuba Standard Stealth Mute
This practice mute is unique in that it responds evenly in all registers. When used for warming up or quiet practicing, one experiences articulation compression that is similar in feel to those conditions found in normal playing. Trumcor's Variable Air Flow System allows control over the amount of air that passes through the mute, thus giving players the ability to adjust both volume and resistance.
Tuba Deluxe Stealth Mute
The Deluxe Tuba Stealth Practice Mute has the same Variable Air Flow System as the standard Stealth. It also has the "tuning tube" that fine tunes intonation.
https://www.trumcor.com/shop?product_ca ... Tuba+Mutes
Note: This is the DELUXE version and has the adjustable 'tuning-tube' which is useful for dialling-in your particular tuba.
New price for these is $280 (£140) with the shipping.
I'm taking offers.
Located in England but will ship anywhere (and try to make it as painless as possible).
Did I mention it's as new...??