The Real McCoy's is a brand that one could say is the best Americana repro brand in the world, but that does not even begin to do justice to the level of detail or thought that goes into their products.
Nearly every single fabric, button, tag, and thread of these garments has been custom made to meet the spec of the original. In fact, when we first met with them, they told us the story of having a very specific thread recreated because it no longer was available.
While the fits have been updated a bit to blend with more modern wardrobes, everything else is exactly as it was. It just doesn't get better than this if you're looking for wearable artifacts of the early and mid-20th century.