This is an antique Victorian-style adjustable swivel piano stool, typically dating from the late 19th century to early 20th century (circa 1880–1910). Visual & Structural Breakdown Seat: It has a circular, solid wood top with a rounded, bullnose edge. The surface displays a dark, rich stained finish showing natural wood grain variations. Adjustment Mechanism: A heavy-duty iron threaded center rod connects the seat to the base. This allows the user to rotate the seat to raise or lower the height. Base & Legs: The stool is supported by four turned wooden legs with decorative, ring-necked spindle details. The legs are reinforced by an intersecting, turned wood center stretcher for stability. Feet: The base terminates in distinctive, antique claw-and-ball feet. These feature cast metal (likely brass or iron) eagle or dragon claws gripping translucent glass balls.