LEGO 2 x 2 Bricks (System) 420-4
LEGO 2 x 2 Bricks (System) (420-4) is estimated at about $19 sealed as of Aug 2026. Retired · 33 pieces · 1966 System. Track its value and price history.
- Set number
- 420-4
- Theme
- System
- Subtheme
- Supplemental
- Year
- 1966
- Pieces
- 33
- Minifigures
- 0
- Market value
- $19 (Estimate, Aug 2026)
- Used value
- $11
- Retirement
- Retired
2 x 2 Bricks (System) value by year
From $23 in 2019 to $19 (Estimate, Aug 2026): −19%. Its highest year was 2019, at $23.
| Year | Value | Change |
|---|---|---|
| Estimate, Aug 2026 | $19 | +2.4% |
| 2026 (so far) | $19 | — |
| 2024 | $18 | −1.8% |
| 2023 | $19 | +6.7% |
| 2022 | $17 | −23.5% |
| 2021 | $23 | +2.6% |
| 2020 | $22 | −3.9% |
| 2019 | $23 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO 2 x 2 Bricks (System) (420-4) worth?
LEGO 2 x 2 Bricks (System) is worth approximately $19 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO 2 x 2 Bricks (System) retired?
Yes — 2 x 2 Bricks (System) (420-4) has been retired by LEGO and is no longer in production. Retired sets have fixed supply, which is why their prices are driven purely by the resale market.
Why is LEGO 2 x 2 Bricks (System) so expensive?
2 x 2 Bricks (System) was released in 1966 and has since retired. Once LEGO stops producing a set, the only supply is what is already in circulation, so sealed copies in good condition compete for a shrinking pool of stock. That scarcity, not the parts, is what moves the price.