Melt Value:
A $5 Indian weighs 8.359 grams
8.359 grams X 2 coins = 16.72 grams
16.72 grams X .9 (gold content) = 15.05 grams of actual gold
Using the calculator in the link below with gold being $1920, the coins would have a total melt value $836.16
If the total weight of everything is 29.20 grams and we know the coins weigh 16.72 grams, the means the bezels and chains weigh 12.48 grams combined. We don't know the purity, but let's just assume they're 10k. Using the same calculator, 12.48 grams of 10k gold would have a melt value of $321.02. And of course if they're a higher purity, they would indeed be worth more.
Your total melt value would be $1157.18 (or higher depending on the purity of the chains and bezels).
http://coinapps.com/gold/gram/calculator/
That said, these are worth more than melt value assuming no damage to the coins. I think you could get about $1400 ($700 each) for the coins, but you'd still only be looking at melt value for the chains and bezels.
Good luck! Keep us posted.