Compare › Black Bay GMT 79830RB vs GMT-Master II 126710BLRO
Tudor Black Bay GMT 79830RB vs Rolex GMT-Master II 126710BLRO
Which one holds its value, sells faster and costs less? Five rounds, scored on real recorded eBay sales.
Sales data through November 4, 2026 (all brands) · last 12 months
WON0
Sells over retail
ROUND 1Easier to resell
ROUND 2Investment grade
ROUND 3Cheaper to buy today
ROUND 41-year price trend
ROUND 5What matters most to you?
Pick one and we'll call it.
Price history
Typical resale value over time. Hover or tap the chart.
Side by side
| Black Bay GMT 79830RB | GMT-Master II 126710BLRO | |
|---|---|---|
| Typical sale | $3,400 | $23,500 |
| Middle half of sales | $3,054 to $3,750 | $21,700 to $25,200 |
| Boutique retail | $5,275 | $11,800 |
| vs retail | -36% | +99% |
| Sales, 12 months | 320 | 129 |
| 1-year trend | +11% | +12% |
| Grade | B+ (78) | S (98) |
| Today's call | hold | wait for a dip |
Quick answers
Which holds its value better, the Tudor Black Bay GMT 79830RB or the Rolex GMT-Master II 126710BLRO?
The GMT-Master II 126710BLRO. It grades S (98/100) against B+ (78/100), and sells 99% over retail vs 36% under.
Which is cheaper to buy used?
The Black Bay GMT 79830RB: typical eBay sale $3,400 vs $23,500 for the GMT-Master II 126710BLRO.
Which is easier to resell?
The Black Bay GMT 79830RB, with 320 recorded eBay sales in the last 12 months vs 129.
More head-to-heads
Typical sale is the median recorded eBay sale (buyer-paid, before seller fees, each listing counted once). Retail is the current US boutique price where one exists. Grades and today's call come from the Crown Index Vaults. Past prices are not a forecast. Some outbound links are affiliate links.