Graded Pennies vs. Bullion Finally Answered! Maybe?

Howdy all. I found a 2005 Red Book and it got me thinking. I can now look at "book value" of some rare and key date pennies from 2005 and compare that to "book value" from 2011 and then compare all that to bullion. Here is what I found...
1909S in grade G4: In 2005 it was $60.00. In 2011 it is $100. That's a 166% increase.
1909S in grade MS63: In 2005 it was $275. In 2011 it is $375. That's a 136% increase.
1909S V.D.B. in grade G4: In 2005 it was $460. In 2011 it is $850. That's a 184% increase.
1909S V.D.B. in grade MS63: In 2005 it was $1300. In 2011 it is $2000. That's a 153% increase.
1914D in grade G4: In 2005 it was $120. In 2011 it is $215. That's a 179% increase.
1914D in grade MS63: In 2005 it was $2200. In 2011 it is $3300. That's a 150% increase.
1922 no D in grade G4: In 2005 it was $400. In 2011 it is $750. That's a 187% increase.
1922 no D in grade MS63: In 2005 it was $20,000. In 2011 it is $30,000. That's a 150% increase.
1931S in grade G4: In 2005 it was $50. In 2011 it is $110. That's a 220% increase.
1931S in grade MS63: In 2005 it was $100. In 2011 it is $195. That's a 195% increase.
1 copper penny with a face value of 1 cent is currently showing a "melt value" of 2.5 cents or a 250% increase.
I am using the copper bullion "melt value" to compare to the graded coin "book value" to have a more apples to apples comparison. I know that the graded coins may or may not sell at "book value" and the CTU's may or may not sell at "melt value". But I had to base this on something factual.
(On a side note. It appears that the lower graded G4 coins show a bigger "book value" return than the higher graded MS63 coins.)
I thought I would have the answer to the age old question of Graded vs. Bullion. Maybe not
1909S in grade G4: In 2005 it was $60.00. In 2011 it is $100. That's a 166% increase.
1909S in grade MS63: In 2005 it was $275. In 2011 it is $375. That's a 136% increase.
1909S V.D.B. in grade G4: In 2005 it was $460. In 2011 it is $850. That's a 184% increase.
1909S V.D.B. in grade MS63: In 2005 it was $1300. In 2011 it is $2000. That's a 153% increase.
1914D in grade G4: In 2005 it was $120. In 2011 it is $215. That's a 179% increase.
1914D in grade MS63: In 2005 it was $2200. In 2011 it is $3300. That's a 150% increase.
1922 no D in grade G4: In 2005 it was $400. In 2011 it is $750. That's a 187% increase.
1922 no D in grade MS63: In 2005 it was $20,000. In 2011 it is $30,000. That's a 150% increase.
1931S in grade G4: In 2005 it was $50. In 2011 it is $110. That's a 220% increase.
1931S in grade MS63: In 2005 it was $100. In 2011 it is $195. That's a 195% increase.
1 copper penny with a face value of 1 cent is currently showing a "melt value" of 2.5 cents or a 250% increase.
I am using the copper bullion "melt value" to compare to the graded coin "book value" to have a more apples to apples comparison. I know that the graded coins may or may not sell at "book value" and the CTU's may or may not sell at "melt value". But I had to base this on something factual.
(On a side note. It appears that the lower graded G4 coins show a bigger "book value" return than the higher graded MS63 coins.)
I thought I would have the answer to the age old question of Graded vs. Bullion. Maybe not
