So I have a really nice jacket from around 1934 that I got for a good price. Problem is, it has some really set-in stains that absolutely will not come out. I took it to the dry cleaners, they couldn't do it. I made the bad mistake of trying OxiClean, and I got better information some hours after I put it on, then had the stuff removed by the cleaner as quickly as I could. I'm getting really fidgety about this because I can't exactly just "buy another one"; I took it to a dry cleaner, I applied a corrosive detergent to three different spots and let it sit for hours, I soaked that entire area of the jacket in trying to remove the detergent myself (it's sitting on a hanger and I won't touch it for at least 48 hours), and although I'm quite sure it'll be fine, I don't want to run further risks. I've already been a bit rough. I figured you folks might have a better idea on how to get out stains this old than I do, so I need help. I really have no clue what I'm doing. I've always been careful not to stain my jackets, so I've never had this problem. Any help would be deeply appreciated.