Riviera results from Mecum Glendale earlier this week.
1963 Silver Cloud (I think) Riviera coupe with red leather bucket seats—$13,500 hammer price
https://www.mecum.com/lots/AZ0320-404141/1963-buick-riviera/
1963 Arctic White Riviera coupe with completely incorrect (and so admitted) blue cloth bucket seats—$10,500
https://www.mecum.com/lots/AZ0320-404583/1963-buick-riviera/
1970 Harvest Gold (I think) Riviera GS coupe with a black vinyl top and a green vinyl bench seat—a no sale with a maximum bid of $19,000
https://www.mecum.com/lots/AZ0320-405040/1970-buick-riviera-gs/
1973 Burgundy (I think) Riviera GS coupe with burgundy vinyl notchback 60/40 seats—$15,500
https://www.mecum.com/lots/AZ0320-404588/1973-buick-riviera-gs/
1982 White Riviera convertible with a black (!?) convertible top, maple leather 45/45 seats, and a claimed 52,000 miles—$8,500
https://www.mecum.com/lots/AZ0320-404075/1982-buick-riviera-convertible/
1985 Gray Riviera coupe with a gray vinyl Landau top and gray prima cloth 45/45 seats—$10,000
https://www.mecum.com/lots/AZ0320-405164/1985-buick-riviera/