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721 LEGO Trains Steam Locomotive thumbnail image

721 LEGO Trains Steam Locomotive
Images 3
721 LEGO Trains Steam Locomotive
  • Steam Locomotive thumbnail
  • Steam Locomotive thumbnail
  • Steam Locomotive thumbnail

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Steam Locomotive since June 2016. High accuracy
LEGO 721 Steam Locomotive was a 126 piece Trains set released in 1969. It features a steam locomotive with a 12v motor, similar to the 720 Train, but without tracks or additional cars, displaying the number "721" on the side.

The current value for a new and sealed Steam Locomotive is estimated at $700, with an average annual growth of approximately 5%. On the open market, a used set will sell in the range of $140 and $361, depending on its condition.
Steam Locomotive has become a rare set, as set 721-1 has not been available for sale online or in retail in new and good condition for over one year. The current value of this set might be slightly higher than our current estimate. The last brand new Steam Locomotive was sold on eBay.
There are currently no new/sealed listings available for Steam Locomotive at this time.
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Sets in Trains / 12V

720-2 Train with 12V Electric Motor

Theme / Subtheme Trains / 12V
Year 1969
Pieces 369
Availability Retired
720-2 LEGO Train with 12V Electric Motor
Retail $24.50
Value $847.49
Growth  +3359.1%
Annual growth 6.5%

702 12V Motor with Accessories Pack

Theme / Subtheme Trains / 12V
Year 1969
Pieces 28
Availability Retired
702 LEGO Trains 12V Motor with Accessories Pack
Retail $7.25
Value $316.26
Growth  +4262.2%
Annual growth 6.3%

750 8 Straight 12V Conducting Rails

Theme / Subtheme Trains / 12V
Year 1969
Pieces 8
Availability Retired
750 LEGO Trains 8 Straight 12V Conducting Rails
Retail $1.49
Value $22.18
Growth  +1388.6%
Annual growth 3.5%

751 8 Curved 12V Conducting Rails

Theme / Subtheme Trains / 12V
Year 1969
Pieces 8
Availability Retired
751 LEGO Trains 8 Curved 12V Conducting Rails
Retail $1.49
Value $10.21
Growth  +585.2%
Annual growth 3.6%

753 Automatic Right Electric Switch

Theme / Subtheme Trains / 12V
Year 1969
Pieces 5
Availability Retired
753 LEGO Trains Automatic Right Electric Switch
Retail $4.75
Value $78.26
Growth  +1547.6%
Annual growth 3.4%

754 Automatic Left Electric Switch

Theme / Subtheme Trains / 12V
Year 1969
Pieces 5
Availability Retired
754 LEGO Trains Automatic Left Electric Switch
Retail $4.75
Value $81.93
Growth  +1624.8%
Annual growth 5.2%

705 Motor Bushings

Theme / Subtheme Trains / 12V
Year 1969
Pieces 4
Availability Retired
705 LEGO Trains Motor Bushings
Retail $0.50
Value $5.55
Growth  +1010.0%
Annual growth 3.7%

704 12V Sleeper Track Contacts

Theme / Subtheme Trains / 12V
Year 1969
Pieces 2
Availability Retired
704 LEGO Trains 12V Sleeper Track Contacts
Retail $0.75
Value $27.83
Growth  +3610.7%
Annual growth 6.1%

703 12V Replacement Motor

Theme / Subtheme Trains / 12V
Year 1969
Pieces 1
Availability Retired
703 LEGO Trains 12V Replacement Motor
Retail $2.25
Value $38.80
Growth  +1624.4%
Annual growth 5.2%

706 Rail Contact Wires

Theme / Subtheme Trains / 12V
Year 1969
Pieces 1
Availability Retired
706 LEGO Trains Rail Contact Wires
Retail $0.75
Value $26.10
Growth  +3380.0%
Annual growth 6.0%

740-2 12V Transformer for 220V Pack

Theme / Subtheme Trains / 12V
Year 1969
Pieces 1
Availability Retired
740-2 LEGO Trains 12V Transformer for 220V Pack
Retail $12.50
Value $40.74
Growth  +225.9%
Annual growth 2.1%

707-2 12V Train Replacement Parts Retailer Pack

Theme / Subtheme Trains / 12V
Year 1969
Availability Retired
707-2 LEGO 12V Train Replacement Parts Retailer Pack
Retail $99.50
Value $919.85
Growth  +824.5%
Annual growth 4.1%

My Collection

Steam Locomotive Reviews

44 reviews
4.8
Collectors
Investors
BrickTrains-Sets
“The Lego 721 Steam Locomotive is similar to the 720 Train with 12v motor minus the tracks, minus the cars, and minus the price. The steam locomotives is exactly like Set 720 Train with 12v motor, I suppose the price of just the train engine would be rather cheap the buying... More the whole enchilada. The only difference is that on the side of the train it shows the numbers “721” but the actual set had “720” on it, sneaky.”
Full review at bricktrains-sets.com

About Trains 12V

In 1969 LEGO released the 12 volt train sets as part of the Blue Era which was named because of the rail color. These 12V train sets used additional conductor rails mounted between the standard 4.5V rails and 12V motors contained in the same housings as the 4.5V motors, but with additional metal contacts attached to the bottom of the housings.

12V consists of 17 sets that ran from 1969 to 1970. As of today, 722-2 12V Electric Train with 2 Wagons is the most valuable 12V set with an estimated new/factory sealed value of $1,157.
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