This is a Laskey 28G (reproduction). I purchased it in October 2024 and have used it only twice for testing, storing it since then. It has few scratches and is in good condition overall. The inner diameter is neither too large nor too small, making it easy to use for beginners and advanced players alike. It's a U-cup, so it's ideal for rotary tubas. Inner rim diameter: 32.51mm Throat diameter: 8.02mm Cup: Deep U-cup American shank Purchase price: ¥26,000