The most valuable LEGO Trains set today is 7750 Steam Engine with Tender, worth $6,368 new and sealed. This list covers sets released between 1966 and 1991, and every one of them has retired. Half of them are worth more than $1,953. The 1980s are the strongest decade on the list. The 12 volt trains of the 1980s carry the most value, such as the Electric Goods Train Set and the Railway Station. The 12 volt system powered the track and could switch points and signals from a distance, and complete sealed sets are now very scarce.

Below are the most valuable LEGO Trains sets on the secondary market today, ranked by their current value new and sealed.
Most valuable LEGO Trains set
7750 Steam Engine with Tender $6,367.70
Highest growth set
180 4.5V Train with 5 Wagons +29182.92%
Largest set
10173 Holiday Train 965 pieces
Set with the most minifigures
4558 Metroliner 11 minifigures

7750 Steam Engine with Tender

Theme / Subtheme Trains / 4.5V / 12V
Year 1980
Pieces / Minifigs 263 / 2
Availability Retired
It features remote-controlled points and signal lights, an electric inter-city express, a battery train, and a push-along train. The system allows conversion from battery to electric locomotives and rails, and includes minifigures for the carriages.
7750 LEGO Trains Steam Engine with Tender
Retail $75.00
Value $6,367.70
Growth  +8390.3%
Annual growth 6.4%

7730 Electric Goods Train Set

Theme / Subtheme Trains / 4.5V / 12V
Year 1980
Pieces / Minifigs 512 / 2
Availability Retired
It features a detailed steam locomotive with opening cab doors and windows, fitted with a 12V motor for powered operation.
7730 LEGO Electric Goods Train Set
Retail $99.99
Value $6,154.90
Growth  +6055.5%
Annual growth 9.4%

113-2 Motorized Train Set

Theme / Subtheme Trains / 4.5V
Year 1966
Pieces 402
Availability Retired
It was only sold in Europe. From the LEGO catalog - "A 402 piece set that builds an authentic European style train.
113-2 LEGO Motorized Train Set
Retail $16.99
Value $3,836.41
Growth  +22480.4%
Annual growth 9.5%

7822 Railway Station

Theme / Subtheme Trains / 4.5V / 12V
Year 1980
Pieces / Minifigs 384 / 3
Availability Retired
It consists of a large railway station with entry steps, a ticket office, a waiting area, luggage doors, and a bridge crossing the track to a second platform.
7822 LEGO Trains Railway Station
Retail $44.75
Value $2,661.82
Growth  +5848.2%
Annual growth 9.3%

7725 Electric Passenger Train Set

Theme / Subtheme Trains / 4.5V / 12V
Year 1981
Pieces / Minifigs 485 / 1
Availability Retired
It includes a passenger train with electric motor which features a simplified railcar with three coaches, driver’s cabs at both ends, and removable roofs. The set includes a single minifigure, a circular track without straight sections.
7725 LEGO Electric Passenger Train Set
Retail $69.99
Value $2,282.25
Growth  +3160.8%
Annual growth 8.2%

138 Electronic Train

Theme / Subtheme Trains / 4.5V
Year 1969
Pieces 111
Availability Retired
It features a black motor, a black holder for three 1.5V batteries, a white microphone block, a transparent block with a circuit board, color-coded cables, and various bricks, wheels, and couplings. It also includes a whistle for sound-activated control of the train. The set was also called Whistle Train.
138 LEGO Electronic Train
Retail $26.50
Value $2,207.79
Growth  +8231.3%
Annual growth 8.1%

7745 High-Speed City Express Passenger Train Set

Theme / Subtheme Trains / 4.5V / 12V
Year 1985
Pieces / Minifigs 736 / 10
Availability Retired
The set builds a high-speed passenger train with an oval 12V track that includes six additional straight sections and a passenger platform.
7745 LEGO High-Speed City Express Passenger Train Set
Retail $96.50
Value $2,074.52
Growth  +2049.8%
Annual growth 6.2%

165 Cargo Station

Theme / Subtheme Trains / 4.5V / 12V
Year 1978
Pieces / Minifigs 268 / 2
Availability Retired
It depicts a cargo-loading facility with an overhead gantry crane spanning the track to lift goods to and from trains.
165 LEGO Trains Cargo Station
Retail $14.99
Value $2,057.37
Growth  +13624.9%
Annual growth 10.8%

4558 Metroliner

Theme / Subtheme Trains / 9V
Year 1991
Pieces / Minifigs 784 / 11
Availability Retired
It features a Metroliner model train with three train cars, scaffolding for passengers, and a 20-piece track. The train operates on a 9V line and can move forwards and backwards.
4558 LEGO Trains Metroliner
Retail $139.99
Value $1,989.17
Growth  +1320.9%
Annual growth 6.3%

7760 Diesel Shunter Locomotive

Theme / Subtheme Trains / 4.5V / 12V
Year 1980
Pieces / Minifigs 150 / 2
Availability Retired
It features a small blue and black shunter locomotive with engine cooling vents, unique blue windows, train doors, and weights. It is also called Electric Diesel Locomotive.
7760 LEGO Trains Diesel Shunter Locomotive
Retail $29.99
Value $1,972.50
Growth  +6477.2%
Annual growth 4.8%

182 Train Set with Motor

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 369
Availability Retired
It includes a steam engine and four carriages with car transporter at the end. It consists of enough track to construct an oval with 4 lengths of straight track, and a signal post.
182 LEGO Train Set with Motor
Retail $19.99
Value $1,952.56
Growth  +9667.7%
Annual growth 4.7%

180 4.5V Train with 5 Wagons

Theme / Subtheme Trains / 4.5V / 12V
Year 1972
Pieces 228
Availability Retired
It consists of a steam locomotive, a battery car, three freight wagons, and a tipper car. The battery-operated engine connects via polarity-sensitive magnets. It also include 40 tracks and a signal.
180 LEGO 4.5V Train with 5 Wagons
Retail $6.50
Value $1,903.39
Growth  +29182.9%
Annual growth 11.1%

118 Electronic Train

Theme / Subtheme Trains / 4.5V
Year 1968
Pieces 110
Availability Retired
The set consisted of a black motor, black holder for 3 1.5V batteries, white microphone block, transparent block containing a circuit board with electronics, 2 cables with color-coded plugs, wheels and couplings and a whistle.
118 LEGO Electronic Train
Retail $19.95
Value $1,777.81
Growth  +8811.3%
Annual growth 6.9%

118-3 Sears Motorized Freight or Passenger Train

Theme / Subtheme Trains / 4.5V
Year 1969
Pieces 451
Availability Retired
It was exclusive to Sears, Roebuck and Co stores in the United States. It consists of a 5-car freight or 4-car passenger train, a large oval track with switch to side rails, and a precision-geared power unit that fits into both locomotive styles. The train moves forward and backward on 25 track sections, powered by three C-size batteries.
118-3 LEGO Sears Motorized Freight or Passenger Train
Retail $19.99
Value $1,732.76
Growth  +8568.1%
Annual growth 8.1%

122 Loco and Tender

Theme / Subtheme Trains / 4.5V
Year 1969
Pieces 102
Availability Retired
It included a locomotive, a tender, the battery box and the motor itself.
122 LEGO Trains Loco and Tender
Retail $9.50
Value $1,659.00
Growth  +17363.2%
Annual growth 6.9%

726 Western Train

Theme / Subtheme Trains / 4.5V / 12V
Year 1976
Pieces / Minifigs 291 / 3
Availability Retired
The set was also called "Wild West Express".
726 LEGO Western Train
Retail $21.50
Value $1,631.42
Growth  +7488.0%
Annual growth 9.1%

7740 Inter-City Passenger Train Set

Theme / Subtheme Trains / 4.5V / 12V
Year 1980
Pieces / Minifigs 786 / 10
Availability Retired
It includes a big station platform, a locomotive, two passenger cars and a complete circle track. The train itself was inspired by the German train, the Trans Europ Express "Rheingold".
7740 LEGO Inter-City Passenger Train Set
Retail $159.99
Value $1,581.79
Growth  +888.7%
Annual growth 5.1%

118-2 Small Train Set

Theme / Subtheme Trains / 4.5V
Year 1968
Pieces 451
Availability Retired
It was also called 'Electronic Train' and was only released in Europe. The set consisted of a black motor, black holder for 3 1.5V batteries, white microphone block, transparent block containing a circuit board with electronics, 2 cables with color-coded plugs, wheels and couplings and a whistle. It could build 3 train cars.
118-2 LEGO Small Train Set
Retail $15.50
Value $1,579.61
Growth  +10091.0%
Annual growth 8.3%

7755 Diesel Heavy Shunting Locomotive

Theme / Subtheme Trains / 4.5V / 12V
Year 1983
Pieces / Minifigs 164 / 1
Availability Retired
It features an electric diesel locomotive with opening doors, a removable roof for minifigure placement, and rotating lanterns that change from red to white based on train direction. The set was also called "Electric Diesel locomotive".
7755 LEGO Trains Diesel Heavy Shunting Locomotive
Retail $49.99
Value $1,400.26
Growth  +2701.1%
Annual growth 4.4%

724 12v Diesel Locomotive with Crane Wagon and Tipper Wagon

Theme / Subtheme Trains / 4.5V / 12V
Year 1972
Pieces 155
Availability Retired
It consists of a diesel locomotive with a crane wagon and a tipper wagon. The set includes 12-volt motorized tracks and a crane with cargo. It also includes stickers of the logo of the Deutsche Bundesbahn.
724 LEGO Trains 12v Diesel Locomotive with Crane Wagon and Tipper Wagon
Retail $29.99
Value $1,387.64
Growth  +4527.0%
Annual growth 7.4%
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