Overhead valves, bespoke bodies
The New Phantom replaced the Silver Ghost's side-valve engine with a 7.7-litre overhead-valve six and retained much of its chassis logic. British and American cars differ; coachwork decides character and value, not chassis year.
Market value · road
USD 72,911.59–USD 333,091.03
Market value · road
USD 72,911.59–USD 333,091.03
Market & Price
The Rolls-Royce Phantom I reference estimate is USD 72,912–USD 333,091 (Sept 2026). The file contains 101 documented road sales, with individual specifications recorded separately. Actual prices depend on specification, condition and provenance; this range is not an offer or a confirmed sale price.
12 months from the model baseline
Model data: Jul 2026 · 101 documented sale anchors. Modeled history between documented sales.
P50 is the model median. The outer shading spans P10–P90; the darker band spans P25–P75. These are model quantiles, not verified probabilities or observed sale prices. The calculation extends the modeled trend and volatility; it does not include new listings, vehicle condition or transaction costs.
Compound annual growth
| Window | This car* | S&P 500 | Gold |
|---|---|---|---|
| 1Y | +41.1% | +18.8% | +21.9% |
| 5Y | -3.7% | +11.4% | +17.6% |
| 10Y | +10.5% | +13.3% | +11.8% |
*Modeled price CAGR · S&P is a price index, no dividends
Deepest drawdown · model window
Forecast ladder · model quantiles
| Horizon | P10 | P50 | P90 |
|---|---|---|---|
| +6M | USD 140,588.95 | USD 170,551.82 | USD 206,900.5 |
| +12M | USD 134,045.94 | USD 175,067.93 | USD 228,643.84 |
| +24M | USD 126,644.81 | USD 184,462.05 | USD 268,674.63 |
Median path with the 10th and 90th percentile · not investment advice
101 of 101 recorded sales · shown in USD · recorded currency in each record
Coachbuilder, body originality and build records matter more than model year.
Floor
USD 72,911.59
Typical
USD 166,152.22
Ceiling
USD 333,091.03
Estimate band for good road cars. 33 documented sales since 2019 plotted below.
Band and axis shown in USD. Sale positions use indicative fixed-rate conversion to USD; sale readouts retain recorded currencies. USD. Exceptional sporting one-offs can exceed the band; formal bodies, altered cars and deferred mechanical work can fall below it.
Instrument calibration for this file is in progress — the terminal above reads the documented record directly.
The ledger is evidence of dispersion, not a price index. Both entries are documented auction sales, but neither represents every Phantom I body style.
Overview
Rolls-Royce announced the New Phantom in The Times on 2 May 1925. The notice simultaneously made Silver Ghost the official name of the outgoing 40/50 H.P. and introduced Phantom for its replacement.
The new overhead-valve engine answered the limits Henry Royce had identified in the Silver Ghost. The rolling chassis still left the owner's coachbuilder to determine whether the finished car was a compact owner-driver body, an open tourer or a formal limousine.
Derby moved to Phantom II in 1929, but Springfield continued building its version until 1931. The Phantom I label is retrospective, adopted to distinguish the New Phantom after the second generation appeared.
Reference
The records
0cc
overhead-valve six
largest engine yet in a Rolls-Royce passenger chassis
0
combined production
Derby and Springfield
HICON BID
A HICON Bid is a confidential expression of buying interest on the Rolls-Royce Phantom I file — never public, never shown to other members. It is not a binding purchase, and HICONIUM holds no funds.
HICON Bids are a member instrument. Sign in to place one.
The vault
You keep one? The record starts in your garage — identity, papers, photography, and the market evidence this file already carries, bound to your chassis.
The cars
Documented individual cars — chassis, colour, ownership and sale history. Open one for its full provenance. Public records only; members see the complete registry.
08 documented · public records
The hands
The people whose work shaped the Rolls-Royce Phantom I.
Chief engineer
Began work on the Silver Ghost's replacement in the early 1920s and directed the New Phantom's engineering development.
Managing director
The marque's naming and publicity strategist; Rolls-Royce's heritage account attributes the Phantom name to him, while noting that documentary proof is absent.
