1970 Buick Gran Sport Stage 1 Convertible
Sold at RM Sotheby's on Oct. 8, 2026, offered with no reserve.
$145,600Confirmed
The price as reported by the house. Hammer price $130,000, before the buyer's premium. Read from the house's results Oct. 26, 2026.
The car
- Year
- 1970
- Make and model
- Buick Skylark, GS and GSX
- Generation
- Skylark and Gran Sport 1965 to 1972
- Version
- GS 455 Stage 1
- Chassis
- 446670H128686
- Condition
- Excellent (2)Likely
Condition is our reading of the listing's description on Hagerty's 1 to 4 scale, not an inspection.
Against comparable sales
Above the middle half of 25 comparable sales, 59% over its top.
Middle half of sales$50,000 to $82,000
Median$70,000
Sales behind it25Likely
From 25 sales of the Buick Skylark, GS and GSX GS 455 Stage 1 (Skylark and Gran Sport 1965 to 1972) in our data over the last 24 months. Hammer prices, before buyer's fees. Half sold between $50,000 and $82,000.
Closest sales
| Car | Auction | Date | Price |
|---|---|---|---|
| 1970 Buick GSX Stage 1Mecum, May 15, 2026 | Mecum | May 15, 2026 | $82,000 |
| 1970 Buick GS Stage 1 ConvertibleMecum, May 15, 2026 | Mecum | May 15, 2026 | $61,000 |
| 1970 Buick GS Stage 1Mecum, May 14, 2026 | Mecum | May 14, 2026 | $70,000 |
| 1970 Buick GS Stage 1 ConvertibleMecum, Jan. 16, 2026 | Mecum | Jan. 16, 2026 | $167,500 |
| 1970 Buick GS Stage 1Mecum, Jan. 10, 2026 | Mecum | Jan. 10, 2026 | $74,000 |
| 1970 Buick GSX Stage 1Mecum, Nov. 1, 2025 | Mecum | Nov. 1, 2025 | $180,000 |
| 1970 BUICK GS 455 STAGE 1 CONVERTIBLEBarrett-Jackson, April 26, 2025 | Barrett-Jackson | April 26, 2025 | $100,000 |
| 1970 BUICK GSX STAGE 1Barrett-Jackson, Jan. 24, 2025 | Barrett-Jackson | Jan. 24, 2025 | $215,000 |