I use sites like numista.com to get some idea of the value in case a coin happens to be a rare one. When I see pricing as below, it tells me that this coin does not have much value beyond the value of the metal.
Note that there are two versions for 1979 per this data from that site and the proof (which your coin does not appear to be) is worth as much as the non-proof and about the going price of 1 oz gold.
The pricing is a guideline and not a guarantee of what you might get but it will help you focus on potentially more rare coins.

Note that there are two versions for 1979 per this data from that site and the proof (which your coin does not appear to be) is worth as much as the non-proof and about the going price of 1 oz gold.
The pricing is a guideline and not a guarantee of what you might get but it will help you focus on potentially more rare coins.





























