What a Royal Oak 15400ST Sells for in Bangkok — September 2026
The 15400ST ran from 2012 to 2019 before the 15500ST replaced it. As of September 2026 it trades roughly ฿160,000 below the 15500ST in full-set condition on international market values, though a group of collectors still seeks it out specifically.
Comparing it with the rest of the family? See Audemars Piguet Royal Oak prices for every reference.
The bands below come from a 2026 Royal Oak price guide and Chrono24 asking prices, converted at ฿32.5/USD and discounted about 10% from asking to clearing. They are estimates, not Bangkok transaction records:
- Low ฿880,000 — 2013–2015 references, worn or half-sets
- Median ฿1,070,000 — Full-set 2016–2018 blue dial with AD warranty
- High ฿1,180,000 — NOS or 2019 (final-year) full-set with stickers
Why the 15400ST Outperforms the Current 15500ST
On price, the 15400ST no longer sits above the 15500ST — 2026 market values put it roughly 10–15% lower. Collectors who choose it anyway give these reasons:
- Case proportion — some collectors find the 15400ST profile less brash than the 15500ST
- Date window symmetry — the 15400ST date window doesn't truncate the Tapisserie pattern; the 15500ST window cuts off one row of the pattern (an aesthetic detail collectors weigh heavily)
- Caliber 3120 — long production run, proven reliability
- Thinning supply — out of production since 2019, clean examples are getting harder to find, even if that isn't yet showing up as a price premium
| Feature | 15400ST | 15500ST |
|---|---|---|
| Production | 2012–2019 | 2019–present |
| Caliber | 3120 (60h) | 4302 (70h) |
| Date window | Symmetrical | Truncates Tapisserie |
| Lume | Standard | More prominent |
| Median Bangkok 2026 | ฿1,070,000 | ฿1,230,000 |
| Difference | −฿160,000 | baseline |
What Bangkok Dealers Pay
| Scenario | Seller payout (2018 blue full set) |
|---|---|
| Full-set, TH warranty | ฿931,000–฿974,000 |
| Full-set, overseas warranty | ฿878,000–฿923,000 |
| No box, papers | ฿826,000–฿870,000 |
| Loose | ฿766,000–฿809,000 |
Dealers pay 87–91% — higher than 15500ST because resale velocity is faster and supply continues to decline.
"Tapisserie Clipped by Date" — The Collector Detail
On the 15500ST, the date window at 3 o'clock cuts off one row of Tapisserie, breaking the dial's symmetry. The 15400ST kept that symmetry — a small detail that turned into a meaningful collector preference. AP returned to dial-symmetry design in subsequent references like the 50th-anniversary 16202ST "Jumbo".
15400ST Authenticity Checkpoints
- Caliber 3120 — automatic with 60-hour reserve, must show perlage and Côtes de Genève
- Tapisserie pattern — same as 15500ST but with no date cutout
- Hour markers applique — white gold applique
- Bracelet integration — bracelet must fit case flush with chamfered finishing
Price Movement 2022–2026
The half-yearly baht figures this page used to list had no source behind them, so they have been removed. The point we can source, converted at ฿32.5/USD, is an international asking-price snapshot, before the roughly 10% discount this page applies:
- July 2026 — Wristcheck's Royal Oak price guide puts the 15400ST at about US$38,500 (about ฿1,251,300), from Wristcheck's live listings on the day of writing
Get a LINE quote for your 15400ST →
Data sources:
- Stories to Watch Royal Oak price guide, July 2026
- 15400ST asking prices on Chrono24 and US pre-owned dealers, September 2026 ($35,000–$38,400)
- WatchCharts Royal Oak 15400ST
- Auction House Thailand marketplace listings (asking prices)
- Wristcheck Royal Oak price guide, July 2026