LEGO Transformer / Speed Controller 12V 7864-1
LEGO Transformer / Speed Controller 12V (7864-1) is estimated at about $140 sealed as of Sep 2026. Retired · 33 pieces · 1980 Trains.
- Set number
- 7864-1
- Theme
- Trains
- Subtheme
- 4.5/12V
- Year
- 1980
- Pieces
- 33
- Minifigures
- 0
- Market value
- $140 (Estimate, Sep 2026)
- Used value
- $29
- Retirement
- Retired
Transformer / Speed Controller 12V value by year
From $70 in 2016 to $140 (Estimate, Sep 2026): +98%. Its highest year was 2026, at $135.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $140 | +7.0% |
| 2026 (so far) | $135 | +3.7% |
| 2025 | $130 | −0.4% |
| 2024 | $131 | −2.9% |
| 2023 | $135 | +64.1% |
| 2022 | $82 | +10.8% |
| 2021 | $74 | −22.1% |
| 2020 | $95 | +30.0% |
| 2019 | $73 | −11.4% |
| 2018 | $83 | +21.8% |
| 2017 | $68 | −3.6% |
| 2016 | $70 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Transformer / Speed Controller 12V (7864-1) worth?
LEGO Transformer / Speed Controller 12V is worth approximately $140 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Transformer / Speed Controller 12V retired?
Yes — Transformer / Speed Controller 12V (7864-1) has been retired by LEGO and is no longer in production. Retired sets have fixed supply, which is why their prices are driven purely by the resale market.
Why is LEGO Transformer / Speed Controller 12V so expensive?
Transformer / Speed Controller 12V was released in 1980 and has since retired. Once LEGO stops producing a set, the only supply is what is already in circulation, so sealed copies in good condition compete for a shrinking pool of stock. That scarcity, not the parts, is what moves the price.