I'm attempting to replace the damaged and missing buttons on a vintage dress coat, but I'm having trouble sourcing silk-covered buttons on eBay, etsy, or other websites. Does anyone have or know of a source for (8) L30 (3/4") and (4) L24 (5/8") silk-covered dress buttons? I have sources for polyester satin buttons, but I'd prefer silk if I can get my hands on them. Thanks.