The Liberty coins camry in $1, $2.5, $5, $10 and $20 denominations. They all have a 90% gold content. Below is a list of each denomination with total weight and gold content weight.

• $ 1.00   1.70 grams overall with 1.530 grams gold
• $ 2.50   4.18 grams overall with 3.762 grams gold 
• $ 5.00   8.24 grams overall with 7.416 grams gold
• $10.00 16.70 grams overall with 15.030 grams gold
• $20.00 33.40 grams overall with 30.060 grams gold

If buying damaged ungradable coins for scrap this is a good way to value their actual worth.