Hmmm not sure about that Bob, the gold hikes came this year, the Spink book was printed in 2009 for the 2010 edition, plus it weighs at around 7.9ish gram, so wouldn't merit near triple value from 2009 book, is it long or short tail? Gold prices jumped 100% from 2006 to 2008 ($450 to $900), and went up another 50% from 2008 to 2010 ($900 to $1350). That price rise wasn't all that was responsible, but it was a big part! See attached chart.