Hope you can fix her but if not, then I hope you give her a place of honor for so many years of service.
I know my ironing board isn't even close to that old but I'm sure I've had mine for at least 40 years. I've replaced the covers many times over the years and about 5 years ago I added a piece of plywood 2' x 4' covered in batting and that silver fabric so pressing yardage is easier. I added "L" bracker underneath to keep it from sliding on me. It's heavy to remove but rarely do I have to remove it to press clothing. Most of it I can still press without removing it. Best thing I ever did. Also the height of my ironing board plus plywood equals the same or pretty darn close to the height of my cutting table so when pressing yards of yardage, I just move it over a little so I can lay the pressed yardage onto the cutting table instead of it falling onto the floor for the cats to lay on. Yes, I've caught those little stinkers laying on it when I was trying to move it.