700%/42 years does give a gross return of 16.6%, but if you calculate your investment returns that way, you are sure to loose your shirt. As mentioned above, the compounded annual return is about 5.1%. But then there is inflation. To look at it another way, $11K in 1972 $$ is about $60K to $62K in today's $$ (depending on who's inflation calculator you use). So the real increase is only about $20K or about a 1.5% compounded annual Rate of Return. Of course if you sold it you would owe capital gains tax on $69K. So, depending on your tax bracket, you would probably end up with a loss.
If you had put that same $11K in an IRA (or better a Roth IRA but I'm not sure they existed in the early '70s) and just left it in an efficient S&P 500 index fund, according to this calculator
http://dqydj.net/sp-500-return-calculator/ the inflation adjusted rate of return, with dividends reinvested, would have been about 5.7% for the S&P, so about 5.5% for an efficient index fund. Using that same calculator but not adjusting for inflation you get a 10.2% ARR or a 5824% total return. That would turn your initial $11K investment into something like $550K (depending on how efficient your fund was) in today's $$.
Kind of makes you sick, but we weren't in it for the money, were we?? BTW, I bought my Pantera in '71 with the thought that it would be much better cost wise than buying a new Corvette (I hated them then, so that wouldn't have happened) or Porsche every 5 to 10 years.
quote:
Originally posted by RRS1:
It may be an investment vehicle, but it still needs up keep. It's going to continue to deteriorate. The engine bay sure doesn't look like low mileage. If it's not going to be used, just drain all the fluids. I'd say there's allot more risk purchasing it now.
I come up with a 16.6% annual return. Considering a 700% gain stretched out over 42 years. Damn good, but I doubt original owner.