The spring loaded system appear to be working. Believe this one to be from late 1800s or early 1900s since it does not have the patent date on it.
Vintage Rustic Black American Family Scale and similar items
ANTIQUE HANGING SCALE FORSCHNER CO 30 lb Vtg Primitive Brass Face Tin Tray, NY $97.00 - PicClick
Brass Hanging Scales
ANTIQUE OLD MANCUR Scale Spring Balance Hanging Brass Iron Spring Scale Pud 1800 £47.02 - PicClick UK
Vintage Ceiling Hook, Forschner Hand Held Butcher Hanging Scale, Antique Kitchen Scales, Kitchenalia, Rustic Industrial Metal Hooks - Canada
CHAS. FORSCHNER & Sons Brass Hanging Scale $109.95 - PicClick
Antique C Forschner's Balance No 2 New York Hanging Scale 24 lb, Black & Brass
Hook Spring Scale
ANTIQUE C FORSCHNER Balance Scale, New York, Brass Face Plate, 0 - 25 lbs $25.99 - PicClick
Vintage John Chatillon And Sons Market Scale
Forschner Scale for sale
Antique Vintage Brass C Forschner Hanging Scale, 50lbs, New York, C Forschner Spring Balance Hanging Scale - Canada
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2701) ANTIQUE TURNBULL'S 24 LB Balance No 2 Fish Scale Brass Front Patent NY $18.18 - PicClick
Antique & Vintage decor, knic knac's