Browse
- Sets
- All Sets
- New Sets
- Recently Retired Sets
- Sets Retiring Soon
- Sets Available Soon
- Set Release Rumors
- Minifigs
- All Minifigs
- New Minifigs
- Recently Retired Minifigs
- Minifigs Retiring Soon
Deals
Analysis
- Sets
- Themes
- Subthemes
- Years
- Most Valuable
- Most Expensive
- Most Owned
- BE 100 Index
- Minifigures
- Most Valuable
- Most Owned
My CollectionSign In or Up

Sets
Basic
Supplementaries
Extra Bricks Yellow

803 LEGO Extra Bricks Yellow

Name: LEGO Extra Bricks Yellow
Brand: LEGO
SKU: 803-1
Availability: InStock
Rating: 4.5 (25 reviews)

Images 1

LEGO 803 Extra Bricks Yellow is a vintage Basic set from 1986 valued at $20 for new and sealed sets, up 330% from an original retail price of $4.75. Annual appreciation has averaged 3.29% since release. On the used market, values range from $9 to $11 based on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Extra Bricks Yellow since June 2016. High accuracy

LEGO 803-1 Extra Bricks Yellow is a Basic Supplementaries set released in 1986, containing 62 pieces. It is a color-specific parts pack of standard yellow System bricks in assorted sizes, ranging from 1x1 and 1x2 up to 2x10. The selection includes classic 2x2 and 2x3 bricks without internal/cross supports typical of the era, alongside common sizes such as 1x3, 1x4, 1x6, 1x8, 2x4, and 2x8.

A new and sealed Extra Bricks Yellow is currently valued at around $20, with annual growth of approximately 3%. The average used price is $9 for those in good overall condition. Based on current trends, this set could be valued near $21 within the next year.

All regions

All regions 2
Germany 1

For Sale (New/Sealed)

	(DE) -------- Box with Little Storage Marks --------- - Preis inkl. MwSt. zzgl. V...	$17.49 -14.4%
	(DK) New sealed box. We are the original owners. Box is in great condition, minor shelf-wa...	$21.67 +6.0%

Sets in Basic / Supplementaries


	800-2 Extra Bricks Red Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 120 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $19.19 Growth +304.0% Annual growth 2.9% I own this set I want this set

	812 Red Roof Bricks, Shallow Pitch Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 101 Availability Retired Buy this set at eBay Bricklink	Retail $4.75 Value $38.80 Growth +716.8% Annual growth 5.0% I own this set I want this set

	801-2 Extra Bricks Blue Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 82 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $28.60 Growth +502.1% Annual growth 4.4% I own this set I want this set

	804 Extra Bricks Black Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 62 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $20.91 Growth +340.2% Annual growth 3.8% I own this set I want this set

	805 Extra Bricks Grey Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 62 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $5.01 Growth +5.5% I own this set I want this set

	811 Red Roof Bricks, Steep Pitch Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 59 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $20.48 Growth +331.2% Annual growth 4.9% I own this set I want this set

	806 Extra Plates Blue Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 42 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $24.70 Growth +420.0% Annual growth 2.6% I own this set I want this set

	807 Extra Plates Red Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 42 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $26.25 Growth +452.6% Annual growth 2.4% I own this set I want this set

	808 Wheels and Tyres Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 40 Availability Retired Buy this set at eBay	Retail $4.75 Value $15.62 Growth +228.8% Annual growth 3.0% I own this set I want this set

	809 Doors and Windows Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 38 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $24.90 Growth +424.2% Annual growth 4.2% I own this set I want this set

	802-2 Extra Bricks White Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 30 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $17.42 Growth +266.7% Annual growth 1.9% I own this set I want this set

	816 Lighting Bricks, 4.5V Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 18 Availability Retired Buy this set at eBay	Retail $9.49 Value $73.13 Growth +670.6% Annual growth 6.2% I own this set I want this set

	814 Baseplates, Green, Red and Yellow Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 3 Availability Retired Buy this set at eBay Bricklink	Retail $3.90 Value $18.38 Growth +371.3% Annual growth 2.6% I own this set I want this set

	813 Baseplate, Green Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 1 Availability Retired Buy this set at eBay	Retail $4.49 Value $12.30 Growth +173.9% Annual growth 4.6% I own this set I want this set

	815 Baseplate, Grey Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 1 Availability Retired Buy this set at eBay Bricklink	Retail $7.49 Value $19.50 Growth +160.3% Annual growth 1.8% I own this set I want this set

My Collection

I own this set

I want this set

Set Details

Set number

803-1

Name

Extra Bricks Yellow

Theme

Basic

Subtheme

Supplementaries

Year

1986

Availability

Retired

Pieces

62 (PPP $0.08)

Set Pricing

Retail price

$4.75

New/Sealed

Value

$20.44

Growth

+330.32%

Annual growth

+3.29%

90-day change

-2.01%

Used

Value

$8.95

Range

$8.77 - $10.74

Quick Buy

Bricklink

Buy

Lowest price

$17.49 (DE)

Highest price

$21.67

*Listings are for new/sealed sets.

Set Predictions

New/Sealed

Today's value

$20.44

1 year forecast

$21.11+3.29%

5 year forecast

$23.77+16.30%

$23

$24

803 Extra Bricks Yellow is projected to be valued between $23 - $24 within five years.

Insights

Long-retired and short in sealed supply, Extra Bricks Yellow (803) from the Basic Supplementaries line has shown long-horizon appreciation tied to era-specific brick variants, and its purely generic, color-specific parts inventory and ready substitutes keep upside modest.

Set Facts

The set contains a variety of yellow bricks including 1x1, 1x2, 1x3, 1x4, 1x6, and 1x8 sizes. It also features yellow bricks in larger sizes such as 2x2, 2x3, 2x4, 2x8, and 2x10, with some bricks specifically lacking inside or cross supports.

Regional Retail Prices

United States

$4.75

United Kingdom

£3.25

Extra Bricks Yellow Reviews

25 ratings

4.5

Collectors

Investors

Subtheme Analysis

Basic / Supplementaries

Sets

Years

1973 - 1996

Annual growth

+3.02% (this set +3.29%)

This set's annual growth (CAGR) vs. subtheme

Community Stats

Extra Bricks Yellow currently ranks #42 out of the top most owned sets in Basic Supplementaries.

#1Building Plate, Green

#2X-Large Baseplate Grey

#3Brick Separator, Green

#4Lighting Bricks

#5Wind-Up Motor

#42Extra Bricks Yellow

#43Extra Bricks Black

#44Roof Bricks, 33°

About Basic Supplementaries

LEGO Supplementaries were sets released during the early days of the LEGO system. These sets were designed to supplement and expand upon the building possibilities of existing LEGO sets. Instead of being complete stand-alone models or kits, Supplementaries provided additional bricks, special parts, wheels, windows, doors, gears, or even motors. These sets were especially useful during an era when LEGO's product line was simpler and less specialized than it is today.

Supplementaries consists of 75 sets that ran from 1973 to 1996. As of today, 637 Play Table is the most valuable Supplementaries set with an estimated new/factory sealed value of $296.

Set Pricing Models

BrickEconomy uses a number of methods to determine the value of a set.

New/Sealed

Machine Learning/AI Model

Value (today)

$20.44

Value (in a year)

$21.11

Value (in 2 years)

$21.79

Accuracy

0.960300 Very high

Statistical Model

Value (today)

$19.36

Value (in a year)

$20.12

Value (in two years)

$20.88

Accuracy

0.517152 Medium

Used

Machine Learning/AI Model

Value (today)

$8.95

Value (low range)

$8.77

Value (high range)

$10.74

Accuracy

0.905300 High

To learn more about how we calculate pricing and forecasting, check out our article on BrickEconomy’s Approach to LEGO Pricing and Future Value Predictions.

Region · United States (USD)

Theme · Light

Explore

Sets Minifigs Deals

About Us

About BrickEconomy Contact Us Support Us

Helpful Links

FAQs Widgets Sitemap

Follow BrickEconomy

Facebook

Twitter/X

Instagram

LEGO, the LEGO logo, the Minifigure and the brick and knob configurations are trademarks and/or copyrights of the LEGO Group of companies which does not sponsor, authorize or endorse this site.
BrickEconomy, the BrickEconomy logo and all content not covered by The LEGO Group's copyright is, unless otherwise stated, ©2026 BrickEconomy.

Change Region

Changes the pricing currency and date formats to a specific region. Adjusts pricing and date formats to region.