How many pieces are in the Diesel Freight Train Set, battery?

Diesel Freight Train Set, battery contains 425 pieces.

When was the Diesel Freight Train Set, battery released?

Diesel Freight Train Set, battery was released in 1980.

LEGO Diesel Freight Train Set, battery set 7720

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🏛 4.5V

Set #7720

Diesel Freight Train Set, battery

The Diesel Freight Train Set 7720-1 is a classic piece of LEGO history.

Before you buy

Who it's for: Intermediate build Ideal for LEGO train enthusiasts and collectors interested in a classic building experience
Build: 425 pieces · about 4.5 hours Build time is an estimate.
Price: $69.99 list price · 16.5¢ per piece
Availability: Likely retired

★★★☆☆ 3.8 community rating

Fans appreciate the nostalgic value and classic design of the Diesel Freight Train Set, though some find the lack of modern features and the age of the set to be drawbacks. The vintage minifigures and train elements are praised for their historical significance.

$69.99

Best Price

$62.99

You Save

10% OFF

📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

The Diesel Freight Train Set 7720-1 is a classic piece of LEGO history. Released in 1980 as part of the 4.5V train system, this set evokes a sense of nostalgia for older LEGO fans and train enthusiasts, marking a significant era in LEGO train development.

This set is perfect for collectors interested in vintage LEGO trains and those seeking a tangible piece of LEGO history. Rebuilding and displaying this set provides a hands-on connection to LEGO's past, offering a rewarding experience for those who appreciate the evolution of LEGO trains.

Skip this if you're looking for modern train features like remote control or Power Functions. Consider newer LEGO train sets such as 60198-1 or 60336-1 for more advanced functionality and playability.

✨ New

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What is the best way to maintain and preserve a vintage LEGO train set like the 7720-1? How does the 4.5V battery system compare to modern LEGO train power systems? What are the key differences between this set and more recent LEGO train releases? Where can I find replacement parts or instructions for the Diesel Freight Train Set 7720-1?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

425

Pieces

⏱

4.5h

Estimated Build Time

📊

Intermediate

Difficulty

Build Highlights:

Assembling the vintage diesel freight train
Constructing the classic 4.5V battery-powered system
Building the freight cars and accessories
Creating a complete train setup with tracks and scenery

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

↑ Trending up since release

Investment Grade

⏳ Retired

The Diesel Freight Train Set 7720-1 holds strong investment potential due to its age, rarity, and the enduring popularity of LEGO trains. As a vintage set from 1980, it is highly sought after by collectors, driving up its value on the secondary market. The rising price trend indicates increasing demand, making it a promising addition to any LEGO investment portfolio. However, potential investors should be aware of the set's age and condition, as these factors can significantly impact its value. Compared to modern sets, the 7720-1 offers a unique historical appeal that sets it apart, potentially yielding substantial returns for those who acquire and maintain it in good condition.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

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Compared to modern LEGO train sets like 60198-1 or 60336-1, the Diesel Freight Train Set 7720-1 offers a vintage building experience and a piece of LEGO history. While newer sets feature remote control and advanced functionality, the 7720-1 provides a nostalgic charm and a unique collectible value. Collectors interested in the evolution of LEGO trains may prefer the 7720-1 for its historical significance, while those seeking modern features may opt for the newer sets.

3 Minifigures Included

Man, Blue Shirt, Blue Legs, Red Hard Hat

4 parts

C+

Man - Blue Jacket, Blue Legs, Red Hat

4 parts

Man - Blue Jacket, Blue Legs, Red Hat

4 parts

C+

The set includes three classic LEGO minifigures, each with a simple design and red headwear, typical of LEGO figures from the 1980s. These figures add to the set's vintage charm and collectible value.

📦 Parts Inventory

Official piece count: 425
Parts cataloged in this inventory: 79 unique parts, 416 pieces
Minifigures: 3

LEGO counts 425 pieces. This inventory comes from a separate parts catalog and lists 428, including the 12 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

Plate Special 2 x...

Part #: 122c01 2× Black

Brick 2 x 4

Part #: 3001 1× Black

Brick 2 x 2 witho...

Part #: 3003a 2× Red

Brick 1 x 2

Part #: 3004 2× Black

Part #: 3004 11× Yellow

Brick 1 x 1

Part #: 3005 14× Red

Brick 1 x 1

Part #: 3005 8× Yellow

Brick 1 x 6

Part #: 3009 8× Black

Brick 1 x 6

Part #: 3009 1× Yellow

Brick 1 x 4

Part #: 3010 2× Yellow

Brick 1 x 4

Part #: 3010 7× Red

Brick 1 x 4

Part #: 3010 1× Black

Plate 2 x 4

Part #: 3020 1× Yellow

Plate 2 x 3

Part #: 3021 2× Black

Plate 2 x 3

Part #: 3021 2× Yellow

Plate 2 x 2

Part #: 3022 6× Black

Plate 1 x 2

Part #: 3023 2× Black

Plate 1 x 2

Part #: 3023 4× Yellow

Plate 1 x 1

Part #: 3024 8× Black

Plate 1 x 1

Part #: 3024 4× Red

Plate 6 x 16

Part #: 3027 1× Black

Plate 6 x 12

Part #: 3028 2× Light Gray

Plate 4 x 6

Part #: 3032 1× Light Gray

Plate 4 x 6

Part #: 3032 4× Red

Plate 6 x 10

Part #: 3033 1× Black

Plate 4 x 8

Part #: 3035 1× Black

Plate 6 x 8

Part #: 3036 1× Black

Brick Sloped 45° ...

Part #: 3037 2× Light Gray

Brick Sloped 45° ...

Part #: 3039 2× Red

Brick Sloped 45° ...

Part #: 3039 2× Light Gray

Window 1 x 2 x 2 ...

Part #: 3081c01 4× Red

Brick Special 1 x...

Part #: 3134 1× Red

Hinge Plate 2 x 5...

Part #: 3149bc01 1× Black

Train Direction S...

Part #: 3218 1× Red

Vehicle Track, Tr...

Part #: 3228b 8× Light Gray

Vehicle Track, Tr...

Part #: 3229b 16× Light Gray

Vehicle Track, Tr...

Part #: 3230b 16× Light Gray

Brick Sloped 33° ...

Part #: 3297 11× Light Gray

Brick Sloped 33° ...

Part #: 3298 2× Light Gray

Construction Vehi...

Part #: 3314 1× Black

Brick Special 1 x...

Part #: 3317 1× Yellow

Construction Vehi...

Part #: 3433 1× Yellow

Battery Box, Trai...

Part #: 3443c02 1× Blue

Plate 1 x 8

Part #: 3460 2× Light Gray

Plate 1 x 8

Part #: 3460 2× Black

Train Buffer Single

Part #: 3488 4× Black

Part #: 3623 4× Black

Plate 1 x 3

Part #: 3623 4× Red

Fence Lattice 1 x...

Part #: 3633 8× Light Gray

Brick Sloped Inve...

Part #: 3665 16× Black

Plate 1 x 6

Part #: 3666 15× Black

Plate 1 x 6

Part #: 3666 2× Light Gray

Plate 1 x 4

Part #: 3710 5× Yellow

Plate 1 x 4

Part #: 3710 4× Black

Plate 1 x 4

Part #: 3710 2× Light Gray

Plate 1 x 4

Part #: 3710 4× Red

Plate Special 1 x...

Part #: 3794a 8× Black

Plate 2 x 6

Part #: 3795 1× Yellow

Plate 2 x 6

Part #: 3795 4× Black

Plate 2 x 6

Part #: 3795 5× Red

Steering Stand 1 ...

Part #: 3829c01 1× Yellow

Plate 2 x 10

Part #: 3832 2× Black

Window 1 x 4 x 3

Part #: 3853 4× Yellow

Window 1 x 2 x 3 ...

Part #: 3856 8× Yellow

Train Buffer Beam

Part #: 4022 4× Black

Train Coupling

Part #: 4023 6× Black

Window 1 x 4 x 3 ...

Part #: 4033 1× Red

Glass for Train W...

Part #: 4034 1× Trans-Clear

Window 1 x 2 x 3 ...

Part #: 4035 1× Red

Glass for Train W...

Part #: 4036 1× Trans-Clear

Brick Special 1 x...

Part #: 4070 2× Black

Brick Special 1 x...

Part #: 4070 8× Red

Plate Special 1 x...

Part #: 4081a 2× Black

Bar 1 x 4 x 2 wit...

Part #: 4083 1× Black

Tyre 21 x 8 Offse...

Part #: 4084 4× Black

Plate Special 1 x...

Part #: 4175 2× Light Gray

Vehicle Base, Tra...

Part #: 4178 1× Black

Wheels Train Spok...

Part #: 4180c04 4× Red

Part #: 4183 4× Trans-Clear

Tyre for Train Wh...

Part #: 458 4× Light Gray

Plate Round 1 x 1...

Part #: 6141 6× Trans-Yellow

Plate Round 1 x 1...

Part #: 6141 6× Trans-Red

Battery Cover, Tr...

Part #: 699 1× Light Gray

Magnet Cylindrical

Part #: 73092 6× Black

Train Track Sleep...

Part #: 767 40× Dark Gray

Vehicle Track, Tr...

Part #: 812 1× Light Gray

Vehicle Track, Tr...

Part #: 813 1× Light Gray

Train Level Cross...

Part #: 815c01 1× White

Train Level Cross...

Part #: 815c02 1× White

Wire with 2-Prong...

Part #: upn0123c28 1× Light Gray

Motor, Train, 4.5...

Part #: upn0259c01 1× Black

Train Signal Post

Part #: upn0262 1× Red

Train Wheel Spoke...

Part #: upn0383a 4× Red

Train Signal Circ...

Part #: upn0387 1× Red

🧱 Sticker Sheet for...

Part #: 191895 1× [No Color/Any Color]

The set features a substantial number of train track elements in light and dark gray, providing ample opportunity for building and expanding train layouts. The inclusion of headlight bricks and various plates and slopes enhances the set's detail and functionality.