Porsche 356 Speedster (Replica)
The Porsche 356 Speedster (Replica) market registers an overvaluation score of 69.33 and appreciation momentum at 62.7, alongside a depreciation risk of 60.59. A volatile regime is signaled, with a 49% probability of an "up" direction over 6 months, transitioning to a 50% probability of "flat" over both 12 and 24 months. Liquidity stands at 40.53, and the strongest leading indicator is U. Michigan Consumer Sentiment with a correlation of -0.61.
What It's Actually Worth
Blended value of a standard 68 yr, 10k mi example, ~$130K now. The green line weighs confirmed auction sales most heavily (the amber dots — what cars actually hammered for), blends in fast-selling "just-missed" listings, and lightly smooths out month-to-month composition noise.
Did our model work? 61% direction calls right
Each faint amber line is a forecast we would have made at that point in the past (12-mo horizon), drawn against what actually happened (blue). Over 54 scored forecasts: 61% got the direction right, median value error ±55%.
Walk-forward: each ghost uses only data available at that date — no hindsight. Data-backed market intelligence, not a guaranteed prediction. Figures are modeled estimates from asking prices, sold comps, and public economic indicators; they can be wrong. Not financial advice.
Auction Scorecard gavel in range 6 in 10
We replayed 200 past auctions in this market — predicting each hammer price from market data before the sale (no hindsight). Typical miss: ±46%; the gavel landed inside our predicted range 6 in 10 of the time, and we lean slightly high on average.
| Sold | Car | Our range | Hammer | |
|---|---|---|---|---|
| 2026-08-12 | 1960 · 44k mi | $60.5K–$325K | $140K | ✓ |
| 2026-08-07 | 1958 · 99k mi | $73.8K–$269K | $215K | ✓ |
| 2026-08-07 | 1960 · 41k mi | $72.7K–$265K | $175K | ✓ |
| 2026-08-06 | 1959 · 79k mi | $80.0K–$292K | $160K | ✓ |
| 2026-07-28 | 1960 · 9k mi | $68.0K–$248K | $125K | ✓ |
| 2026-07-13 | 1957 · 18k mi | $31.8K–$116K | $72.9K | ✓ |
| 2026-07-08 | 1957 · 0k mi | $98.7K–$360K | $40.5K | ✗ |
| 2026-06-24 | 1958 · 67k mi | $80.6K–$294K | $300K | ✗ |
Live now — calling it before the gavel
We're currently tracking 8 open auctions in this market. Here's our predicted hammer range for each — check back after they close.
| Closes | Car | Source | Our predicted range |
|---|---|---|---|
| open | 1956 | BaT | $58.1K–$312K ($135K) |
| open | 1956 · 100k mi | ebay | $55.6K–$299K ($129K) |
| open | 1956 · 1k mi | classic | $75.7K–$407K ($176K) |
| open | 1958 · 48k mi | classic | $62.2K–$334K ($144K) |
| open | 1958 | classic | $52.3K–$281K ($121K) |
| open | 1956 · 11k mi | classic | $46.5K–$250K ($108K) |
| open | 1955 · 15k mi | classic | $33.6K–$181K ($77.9K) |
| open | 1955 · 0k mi | classic | $83.5K–$449K ($194K) |
No-lookahead: predictions are made before each auction closes; the scorecard grades confirmed sold auctions only (no-sales excluded). A modeled estimate, not a guarantee. Data-backed market intelligence, not a guaranteed prediction. Figures are modeled estimates from asking prices, sold comps, and public economic indicators; they can be wrong. Not financial advice.
Where We Think It's Headed
Probability and range, not a single number. Wider = less certain (not bigger gains).
| Horizon | Direction | Probability | Confidence | Past accuracy |
|---|---|---|---|---|
| 6 mo | UP | 49% | Low | 68% |
| 12 mo | FLAT | 50% | Low | 61% |
| 24 mo | FLAT | 50% | Low | 50% |
Data-backed market intelligence, not a guaranteed prediction. Figures are modeled estimates from asking prices, sold comps, and public economic indicators; they can be wrong. Not financial advice.
Lead Indicator Forecast
Some indicators move before this market does. VIX Volatility Index has historically led it by about 23 months — so its recent move implies where prices head next (dashed). The solid green line is actual value through today; the shaded path is what the lead implies.
If You’d Bought in 2007
$100K invested 2007-11 → today (18.8 yrs), this car vs where else you could've put the money. Rebased to 100 at the start; the dashed line is inflation (break-even).
What This Market Follows
Specialty-car prices don't move in a vacuum. These economic indicators have historically led this market — tap one to see it shifted forward by its lead time, overlaid on the value line.
VIX Volatility Index leads by about 23 months (moves with this market, correlation 0.51). Shown shifted forward 23 months so its turns line up with the market's.
Why We Think This
Current Inventory Snapshot
Comparable Markets
| Market | Undervaluation | Appreciation | Liquidity |
|---|---|---|---|
| Alfa Romeo 105 Sedan | 66 | 43 | 36 |
| Mercedes-Benz 190SL | 41 | 45 | 54 |
| BMW 2002 tii | 47 | 56 | 20 |
| Datsun 240Z | 50 | 48 | 28 |
| Datsun 280Z | 38 | 64 | 52 |
| Ferrari 308 | 36 | 50 | 52 |
| Ferrari 308 GT4 | 54 | 47 | 16 |
| Ferrari 328 | 55 | 40 | 53 |
Recent Signals & Alerts
- vin returned higher VIN relisted +$70,000 vs prior
- vin returned higher VIN relisted +$70,000 vs prior
- vin returned higher VIN relisted +$70,000 vs prior
- vin returned higher VIN relisted +$70,000 vs prior
- vin returned higher VIN relisted +$70,000 vs prior
- vin returned higher VIN relisted +$70,000 vs prior
Data-backed market intelligence, not a guaranteed prediction. Figures are modeled estimates from asking prices, sold comps, and public economic indicators; they can be wrong. Not financial advice.