Frankly, just learn to identify vintage denim at all. People have the mistaken idea that everything used to be better quality than now, and that was never true, there has always been bad and good quality stuff. BUT, the thing about buying older stuff (vintage clothing, antique furniture, old tools, etc.) is that if it was bad quality stuff that wouldn’t last, it wouldn’t be here now to begin with.
Frankly, just learn to identify vintage denim at all. People have the mistaken idea that everything used to be better quality than now, and that was never true, there has always been bad and good quality stuff. BUT, the thing about buying older stuff (vintage clothing, antique furniture, old tools, etc.) is that if it was bad quality stuff that wouldn’t last, it wouldn’t be here now to begin with.