Gold Bullion Coin Purchased In The Past. Came Across In Lock Box

Premium over spot at the time of purchase was 9.17%.

To find out if you did OK since 25 Aug 2008,
the purchase price of $449 has to be compound multiplied by the official inflation rate for each year, since 2008.
You will need to go to the US Bureau of Statistics (or whatever else it is known as), to find the annual inflation rate for each year.

Compare the result of your calculations with the current sale price with premium.

Remember, if you need to sell it,
any profit you make on it after inflation has a tax payable on that realized net profit, after inflation has been taken into account.

to the CCF

Found money! Of course you did well. Selling it would free up some revenue to buy a pre 1933 gold coin with collectible value.

I try to get as close to bullion price as possible . It was easier a few years ago when you could get Saints Double Eagles in MS 63 for only a slight premium. Right now after checking at APMEX premiums are fairly high for anything MS 62 or over.

Yojoe1964, personally I don't even look at gold coins that aren't slabbed and if I'm looking for US pre '33 I'll only buy NGC or PCGS graded. There are just too many gold counterfeits floating around to buy raw unless you have some serious expertise and can hold the coin in hand before laying down cash. As far as grade is concerned that definitely depends on the scarcity of the coin you are looking for. For a more common piece, like say a 1911 Indian Head eagle, I would look for something MS 63 or better. For something less common unless your pockets are very deep I would be happy with EF or maybe AU range. I never buy anything below an EF40 in gold.