Thank you David. I guess I could sew eyelettes where the buttons go and then find some cotter pins. Months ago I tried finding cotter pins at the sewing store for this purpose, but they didn't carry them. Even new buttons now come with little fake plastic "cotter pins" attaching them to the card. Three Feathers attaches the buttons to the cards with a pipe cleaner. Maybe I should just look at a hardware store for some small cotter pins. I have read on How To that I should be sewing on an under button on the inside. I happen to have a bag of black four-hole buttons I got at a thrift shop years ago. I may try that first before making holes in the jacket.