Europe's first direct-drive turntable, with a two-piece anti-resonator and spring damping.
Idler-drive turntable: the idler wheel, main bearing and motor mounting decide the price far more than cosmetics. Check the platter spins without rumble at both speeds and that the original plinth/arm are present (a missing SME arm or a non-original plinth can halve the value).
Marks that can be entered for this maker: Model / catalogue number, British capacitor code (Hunts, Mullard), Japanese capacitor code (Nichicon, Chemi-Con, ELNA), EIA component code, Chassis / platter stamp, Version & era marker.
The introduction year is not documented, so the model narrows nothing.
Sold-listing reading: fair $500, good $500, excellent $500 USD · 1 sold listings (thin sample — indicative only) · as of 2022-10 – 2022-10. Only 1 sold listing found in the reachable eBay SOLD table (https://vintage-turntable.com/dual-values) - below the 3-observation threshold, so this is an anchor, not a market average.
Evidence: Stereolife magazine — Dual history · Dual Reference — model tables · +1 more