Electronic Train (138-1) is a 4.5V LEGO set released in 1969 with 124 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing 4.5V sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 40 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1969 (57 years ago — may be retired)
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Catalog scale
124 parts listed · 40 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~269 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
No estimate on BrickID yet
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Parts in this set
40 parts · updating…
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![Battery Box, 4.5V 7 x 11 x 3 Type 2 [Complete Assembly]](https://cdn.rebrickable.com/media/parts/ldraw/0/u9041c01.png)
Battery Box, 4.5V 7 x 11 x 3 Type 2 [Complete Assembly]468c02 · ×1 · Black -
Brick 1 x 13005 · ×8 · Black -
Brick 1 x 13005 · ×2 · Trans-Clear -
Brick 1 x 23004 · ×2 · Trans-Clear -
Brick 1 x 43010 · ×1 · Black -
Brick 1 x 63009 · ×7 · Black -
Brick 1 x 83008 · ×2 · Black -
Brick 2 x 4 without Cross Supports3001a · ×4 · Black -
Brick Round 1 x 1 Solid Stud3062a · ×1 · Black -
Brick Sloped 45° 2 x 1 without Bottom Pin3040a · ×4 · Black -
Brick Sloped 45° 2 x 23039 · ×1 · Black -
Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside7049bc01 · ×2 · White -
Control Unit, Train 4.5V Whistle Brick 4 x 8 x 2 with Forward/Stop/Reverse Functionsupn0313b · ×1 · Trans-Clear -
Electric Connector, 2 Way Male Rounded Narrow Type 2 with Hollow Pins236ac01 · ×2 · Red -
Electric Connector, 2 Way Male Rounded Narrow Type 2 with Hollow Pins236ac01 · ×2 · Blue
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Microphone, Train 4.5V 4 x 4 x 2 with Vertical Plug Socketsupn0311b · ×1 · White -
Motor, Train, 4.5V, 4 x 12 x 3 1/3 Type 1564c01 · ×1 · Black -
Plate 1 x 13024 · ×4 · Black -
Plate 1 x 13024 · ×2 · Red -
Plate 1 x 23023 · ×4 · Red -
Plate 1 x 23023 · ×10 · Black -
Plate 2 x 23022 · ×1 · Yellow -
Plate 2 x 23022 · ×6 · Black -
Plate 2 x 33021 · ×6 · Black -
Plate 2 x 43020 · ×6 · Black -
Plate 2 x 83034 · ×3 · White -
Plate Special 2 x 4 with Train Coupler Open with Magnet Short Cylinder Blue737ac02 · ×2 · Red -
Plate Special 2 x 4 with Train Coupler Open with Magnet Short Cylinder Red737ac01 · ×2 · Red -
Plate Special 6 x 16 with Motor Opening Wide3058b · ×1 · Light Gray -
Technic Tread Crawler Wedge498a · ×2 · Black -
Train Wheel Spoked for Motorupn0383a · ×8 · Red -
Tyre for Train Wheel for Electric Train Motor 12V458 · ×8 · Light Gray -
Tyre Smooth Old Style - Small132a · ×4 · Black -
Vehicle Track, Train, Tapered Rail Curved Inside3230a · ×1 · Blue -
Vehicle Track, Train, Tapered Rail Curved Outside3229a · ×1 · Blue -
Vehicle Track, Train, Tapered Rail Straight 16L3228a · ×2 · Blue -
Wheel Old with 4 Studs7039 · ×4 · Red -
Whistle, Train 4.5V, Adjustable with Yellow Baseupn0312bc01 · ×1 · Black -
![Window 1 x 1 x 1 Classic with Long Sill [Complete]](https://cdn.rebrickable.com/media/parts/ldraw/4/3087bc01.png)
Window 1 x 1 x 1 Classic with Long Sill [Complete]3087bc01 · ×2 · Red -
![Wire 12V / 4.5V with Two Leads [Undetermined Length]](https://cdn.rebrickable.com/media/parts/photos/15/x466-15-d2588fde-efc4-4354-9c4b-2453fd6c76da.jpg)
Wire 12V / 4.5V with Two Leads [Undetermined Length]74503 · ×2 · White