Hamilton winds sets and ticks but not reliably. Waltham does not work. Sold as is as shown for parts, repair, or scrap. Hamilton has 10k rolled gold plate bezel and 1/20 10k gold filled band tops. Waltham has 1/20 12k gold filled band, possibly bezel as well as it’s all connected. 16g total weight of bands/bezels without movements or case backs.
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