In other words, has anyone had one die of apparent old age?

I know this hobby for a large part is younger than the projected life expectancy of a ball python, so I suspect there will be few of you, but if so, how old (roughly) was the BP, and what type of signs did it show before it passed, and for how long?

I can't find any information on this subject anywhere online so I thought I would see if any hobbyists have had any experience here.