Schilke 14A4A Trumpet Mouthpiece

Schilke 14A4A Trumpet Mouthpiece. Unboxed. How does a new Schilke 14A4A compare to the Yamaha Bobby Shew Lead? How does it compare to a 45+ year old Schilke 14A4A? It looks like they improved it.
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Schilke 14A4A Trumpet Mouthpiece: amzn.to/31WWNc3
Yamaha Bobby Shew Lead Trumpet Mouthpiece: amzn.to/3fe4gXY
And to keep them shiny and clean-
3M Tarni-Shield Silver Polish: amzn.to/324ViJb
Thanks for playing along !