Serial Number: 4542660
Year: 1987
 
Yamaha U10BL Upright – Classic Yamaha U10BL acoustic upright, often sourced used/refurbished. 
Features:
Made in Japan
Full 88-key keyboard
Professional Yamaha action for precise control and expression
Rich, warm tone with excellent clarity and projection
Solid spruce soundboard
Durable construction designed for long-term reliability
Elegant polished ebony (BL) finish
Soft-close fallboard on many models
Specifications (Approximate):
Height: 121 cm (48")
Width: 150 cm (59")
Depth: 61 cm (24")
Weight: 210–220 kg (463–485 lbs)