I am very familiar with U.S. Bunting Co., I use to buy wool and cotton (muslin) bunting from them. At one time they were the only supplier of soft cotton bunting, printed flags. All of the big flag companies sold their printed & sewn flags, both cotton & wool, including Detra, Annin, Valley Forge, etc..
The date on 38 star flag most likely is a patent data, then.
Watch ebay, some one in Romania has hacked their main computers and has been placing dummy auctions, making a lot of money for him or her. Although ebay denies it, personal account information is at risk and may have already been hacked. Romanian Police say they know who the person is but canít find him/her and ebay has yet to figure out how to stop the hacking. Delete your cookies after a ebay visit.