Drummer, Don't go too far down that road. Looking at YOC can give one a warm fuzzy feeling (BTW - nobody ever talks about YOC when it's lower than the current yield....) but that's about all it should do.
You are not getting a 48% yield on those shares bought in 1993. You haven't got the 1993 $5 per tied up in those shares - you've got the current share price tied up.