Based on the model and serial number, your trumpet is almost certainly a Yamaha YTR-8310Z Gen II (Second Generation), around 2025

Here’s why:

• The second-generation YTR-8310Z was introduced in 2018 after Yamaha and Bobby Shew redesigned the model with refinements to the bell, bracing, and overall playing characteristics while retaining the original concept.
• Your serial number D98060 falls into the production range seen on instruments built after the GenII redesign. Yamaha does not publish an official serial number/year chart for wind instruments, so the exact production year cannot be determined from the serial number alone.

Your Trumpet

• Model: Yamaha YTR-8310Z
• Generation: Gen II (Second Generation)
• Estimated manufacture date: 2019–2025
• Designed with: Bobby Shew
• Specifications:
  • .445” step bore
  • One-piece hand-hammered yellow brass bell
  • Reverse leadpipe
  • Lightweight construction
  • French bead bell rim
  • Designed for lead, commercial, jazz, and versatile all-around playing.

How to Identify a Gen II

The second-generation model includes:

• Updated bell taper and wall thickness
• Revised bracing
• Improved balance of resistance and projection
• Introduced in 2018 and still based on Bobby Shew’s original design philosophy.