Hello and welcome to the forum!
First thing to establish value- you said that "they are not in proof condition but otherwise have never been circulated"
Proof is a minting process, not a condition. Gold Eagles are minted two different ways- proof and uncirculated bullion. The proof coins will have bright mirror fields and frosty devices(letters and images). These are minted specifically for collectors and are worth more than just gold value. The other kind is the investment-grade uncirculated bullion- the surface will have a uniform, non-mirrored finish. These are worth a few percent over gold spot.
First thing to establish value- you said that "they are not in proof condition but otherwise have never been circulated"
Proof is a minting process, not a condition. Gold Eagles are minted two different ways- proof and uncirculated bullion. The proof coins will have bright mirror fields and frosty devices(letters and images). These are minted specifically for collectors and are worth more than just gold value. The other kind is the investment-grade uncirculated bullion- the surface will have a uniform, non-mirrored finish. These are worth a few percent over gold spot.


















