LEGO 741 12 V Transformer is a vintage Trains set from 1974 valued at $143 for new and sealed sets, up 614% from an original retail price of $19.99. Annual appreciation has averaged 5.13% since release. Used copies are valued between $12 and $14 depending on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set 12 V Transformer since December 2018. High accuracy
LEGO 741-1 12 V Transformer is a Trains 4.5V / 12V set released in 1974, containing 1 piece. This 220V AC version was designed for European markets and supplied power to the 12V LEGO train system of the era. It was part of the classic 4.5V/12V trains lineup and was succeeded in 1980 by the 7864 Transformer / Speed Controller 12V.

A new and sealed 12 V Transformer is currently valued at around $143, with annual growth of approximately 5%. The average used price is $12 for those in good overall condition. Based on current trends, this set could be valued near $150 within the next year.

For Sale (New/Sealed)

(IT) 741 12V Transformer for 220V Pack 1974 Rare New Old Stock#HI $114.52
-19.8%

For Sale (Used)

(NL) Used - Item is in like new condition, comes in original box, also in very good condit... $10.50
(DE) Used - - no box $12.68
(DE) Used - Lego 12V TRAIN Railway 741 Transformer Remote Control BLUE 2ND CHOICE
$13.95

Related Sets

7864 Transformer / Speed Controller 12 V

Theme / Subtheme Trains / 4.5V / 12V
Year 1980
Pieces 33
Availability Retired
7864 LEGO Trains Transformer / Speed Controller 12 V
Retail $65.99
Value $135.54
Growth  +105.4%
Annual growth 3.3%

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 $44.68
Growth  +257.4%
Annual growth 2.3%

Sets in Trains / 4.5V / 12V

725-2 Freight Train Set

Theme / Subtheme Trains / 4.5V / 12V
Year 1974
Pieces 425
Availability Retired
725-2 LEGO Freight Train Set
Retail $25.50
Value $1,715.93
Growth  +6629.1%
Annual growth 8.4%

182 Train Set with Motor

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 369
Availability Retired
182 LEGO Train Set with Motor
Retail $19.99
Value $1,429.70
Growth  +7052.1%
Annual growth 8.7%

148 Central Station

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces / Minifigs 293 / 5
Availability Retired
148 LEGO Trains Central Station
Retail $19.99
Value $895.08
Growth  +4377.6%
Annual growth 7.7%

723-2 Diesel Locomotive with DB Sticker

Theme / Subtheme Trains / 4.5V / 12V
Year 1974
Pieces 98
Availability Retired
723-2 LEGO Trains Diesel Locomotive with DB Sticker
Retail $8.50
Value $724.43
Growth  +8422.7%
Annual growth 7.4%

133 Locomotive

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 87
Availability Retired
133 LEGO Trains Locomotive
Retail $2.89
Value $733.26
Growth  +25272.3%
Annual growth 11.5%

134 Mobile Crane and Wagon

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 86
Availability Retired
134 LEGO Trains Mobile Crane and Wagon
Retail $2.49
Value $406.48
Growth  +16224.5%
Annual growth 10.5%

136 Tanker Wagon

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 83
Availability Retired
136 LEGO Trains Tanker Wagon
Retail $1.89
Value $206.08
Growth  +10803.7%
Annual growth 9.6%

137-2 Passenger Sleeping Car

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 82
Availability Retired
137-2 LEGO Trains Passenger Sleeping Car
Retail $1.89
Value $316.48
Growth  +16645.0%
Annual growth 10.6%

755 Left and Right Points

Theme / Subtheme Trains / 4.5V / 12V
Year 1974
Pieces 12
Availability Retired
755 LEGO Trains Left and Right Points
Retail $11.99
Value $27.31
Growth  +127.8%
Annual growth 1.6%

756 Electric Crossing

Theme / Subtheme Trains / 4.5V / 12V
Year 1974
Pieces 5
Availability Retired
756 LEGO Trains Electric Crossing
Retail $9.99
Value $47.72
Growth  +377.7%
Annual growth 3.1%