Polo Ralph Lauren jackets in the BuAer M-421 style - spec number not listed or mentioned - are being sold on eBay. They are very faithfully detailed, altho made of extra fine chino instead of the water-shedding poplin of the originals. But be forewarned - they are made in an extra lean "fashionista" cut. I just took delivery of size XL, the largest available, and it's suitable only for a very v-shaped figure! At 48" chest and 44" waist, you'd think it would be ok, but the construction results in a fit more like an M or military cut L. It's going right back. The item is listed as Polo Ralph Lauren Tan Jacket Coat Windbreaker. The price - $105 - prompted me to take a chance that the jacket had been pinned back for the photo, but NO, this is how it's cut. Even a body nazi couldn't layer much under this. I don't know what kind of fantasy world these people live in, but it must be full of meticulously fit pretty-boys who live on protein shakes and avocado toast. The kind of people who would think "M-421" was a new designer drug.