LEGO Electronic Control Unit (Forward/Backward - Stop) 139-1
LEGO Electronic Control Unit (Forward/Backward - Stop) (139-1) is worth about $1,064 on the secondary market today. It has 13 pieces, belongs to the Trains theme and was released in 1969. This set has retired — LEGO no longer produces it, so supply is fixed and prices are set entirely by the resale market.
- Set number
- 139-1
- Theme
- Trains
- Subtheme
- Supplemental / 4.5V
- Year
- 1969
- Pieces
- 13
- Minifigures
- 0
- Market value
- $1,064
- Used value
- $10
- Retirement
- Retired
Electronic Control Unit (Forward/Backward - Stop) value by year
From $753 in 2011 to $1,044 in 2026 so far: +39%. Its highest year was 2021, at $1,157.
| Year | Value | Change |
|---|---|---|
| 2026 (so far) | $1,044 | +5.1% |
| 2025 | $993 | +2.0% |
| 2024 | $973 | −1.4% |
| 2023 | $987 | +2.4% |
| 2022 | $964 | −16.7% |
| 2021 | $1,157 | +27.2% |
| 2020 | $909 | +2.0% |
| 2019 | $892 | +2.0% |
| 2018 | $874 | +2.0% |
| 2017 | $857 | +2.1% |
| 2016 | $840 | +2.1% |
| 2015 | $822 | +2.2% |
| 2014 | $805 | +2.2% |
| 2013 | $787 | +2.3% |
| 2012 | $770 | +2.3% |
| 2011 | $753 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Electronic Control Unit (Forward/Backward - Stop) (139-1) worth?
LEGO Electronic Control Unit (Forward/Backward - Stop) is worth approximately $1,064 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Electronic Control Unit (Forward/Backward - Stop) retired?
Yes — Electronic Control Unit (Forward/Backward - Stop) (139-1) 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 Electronic Control Unit (Forward/Backward - Stop) so expensive?
Electronic Control Unit (Forward/Backward - Stop) was released in 1969 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.