Sometimes, a piece of clothing is so expertly rendered from the start that there’s little use in tinkering with the design afterwards. Take, for instance, the peacoat. Since its invention as sailor-ready outerwear in the 18th century, designers have rarely strayed far from the original — and stylish! and warm! — template. Nice to know, in an age when a new iGadget is released every month or so, that some things remain constant. Here, we’ve found a dozen that should stand the test of time quite nicely. And since we’re not entirely opposed to the march of progress, all of them are available to buy online, right now….