How many pieces are in the Diesel Locomotive?

Diesel Locomotive contains 97 pieces.

When was the Diesel Locomotive released?

Diesel Locomotive was released in 1970.

🏛 12V

Set #723

Diesel Locomotive

The Diesel Locomotive 723-1 is a vintage LEGO classic.

Before you buy

Who it's for: Beginner build Ideal for vintage LEGO collectors and train enthusiasts of all ages.
Build: 97 pieces · about 1.5 hours Build time is an estimate.
Price: $8.50 list price · 8.8¢ per piece
Availability: Likely retired

★★★★☆ 4.6 AI-generated review score, not a customer rating

Collectors highly value the Diesel Locomotive 723-1 for its historical significance and vintage charm. The main criticism is its high price on the secondary market due to its rarity.

$8.50

Best Price

$7.65

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 Locomotive 723-1 is a vintage LEGO classic. Released in 1970 as part of the 12V train system, it represents a pivotal era in LEGO train history, showcasing a simpler yet charming design that captures the essence of early LEGO ingenuity and electric train innovation.

This set is perfect for LEGO train enthusiasts and vintage collectors. The relatively small piece count makes it an accessible build, while its historical significance and rarity make it a prized display piece. Owning this set is like owning a piece of LEGO history.

Skip this if you're looking for modern building techniques or complex details. The design is basic compared to today's standards. Consider modern LEGO train sets like 60336-1 Freight Train for a more contemporary experience.

✨ New

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🧱 Building Experience

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

🧩

Pieces

⏱

1.5h

Estimated Build Time

📊

Beginner

Difficulty

Build Highlights:

Simple, straightforward construction typical of early LEGO sets.
Classic red and black color scheme.
Integration with the 12V electric train system.
Vintage printed elements add to the set's charm.

📈 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 Locomotive 723-1 presents a compelling investment opportunity due to its age, rarity, and historical significance within the LEGO train theme. As a set from the 1970s, it's highly sought after by collectors. Its rising price trend indicates strong demand. However, condition is critical; complete sets in excellent condition command the highest prices. Investing in vintage sets carries inherent risks, including potential for damage or missing parts, but the long-term appreciation potential for well-preserved examples is significant.

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

⚖ Compare Similar Sets

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Compared to modern LEGO train sets, the Diesel Locomotive 723-1 offers a simpler, more nostalgic building experience. While lacking the advanced features and details of contemporary sets like 60336-1 Freight Train, its historical significance and rarity make it a unique collector's item. Collectors interested in the evolution of LEGO trains may prefer this set for its vintage charm and investment potential.

📦 Parts Inventory

Piece count: 97
Parts cataloged in this inventory: 22 unique parts, 97 pieces

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

Part #: 3002a 4× Black

Part #: 3004 4× Trans-Clear

Brick 1 x 2

Part #: 3004 4× Black

Brick 1 x 1

Part #: 3005 8× Trans-Clear

Brick 1 x 1

Part #: 3005 12× Red

Brick 1 x 8 with ...

Part #: 3008pr0006 2× Red

Part #: 3023 16× Yellow

Plate 1 x 2

Part #: 3023 10× Red

Plate 2 x 8

Part #: 3034 5× Black

Brick Sloped 45° ...

Part #: 3039 1× Red

Plate Special 6 x...

Part #: 3058b 1× Black

Brick 2 x 4, 12V ...

Part #: 433c01 2× Black

Tyre for Train Wh...

Part #: 458 4× Black

Plate Special 2 x...

Part #: 737ac01 1× Red

Plate Special 2 x...

Part #: 737ac02 1× Red

Motor, Train, 12V...

Part #: upn0274c02 1× Black

Train Wheel Spoke...

Part #: upn0383a 4× Red

🧱 Wire with 2-Prong...

Part #: 2913c02 1× Blue

The set features a classic selection of red, black, and yellow bricks and plates, typical of early LEGO sets. The printed '723' bricks are particularly valuable, as are the 12V train motor components.