[Need help identifying these Riviera hubcaps]

Thanks all. Appreciate the quick response.  I did check everywhere and couldn't find a part number.

[Need help identifying these Riviera hubcaps]

Can some please assist in identifying the year(s) for these Riviera hubcaps?  I believe they are 77-78 but the pictures I can find online have a gold R script in the centercap, but these are silver.  Also, I believe they are for 15" wheels.  Is that the only option for this year?

Once I know what they are I plan on listing them for sale.

TIA,

Marc