Dont know the history on this as far as chain wear, looking by eye id say the outer ring looks as if it's the most use, others don't appear excessively worn.
Sachs 7 Speed Freewheel 12-21t ISO English & Italian fit
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MAILLARD COURSE 5 SPEED FREEWHEELS 1980s - 15 / 30 TOOTH - NEW OLD STOCK
