Orchestral & Wind Instruments
Warburton Top Part 2 ESV for Trumpet
Warburton Top Part 2 ESV for Trumpet, Top Part, For trumpet, Extra shallow V-shape cup, Inner cup diameter: 17.25 mm (.680"), Colour: Silver-plated
https://www.bizrate.co.uk/orchestralinstruments/warburton-top-part-2-esv-oid709394703.html