From what I have noticed, vintage watches generally have folded links. I don't think I have seen one ever with solid links. I'm wondering when did watch bracelets begin to switch to fully solid links and why. Is it due to the trend for bigger heavier watches and in the past you wanted watches to be as light as possible hence the folded links? Or is stainless steel now easier to refine and hence cheaper? Even really high end vintage watches like Rolexs have folded links. Does anyone know the history behind this?