# LEGO Parts Pack, Black Bricks (831-1) — resale value

**LEGO Parts Pack, Black Bricks (831-1)** — resale value from real closed eBay sales.

Values are medians of real closed eBay sales, updated 2026-06-26. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%2520831-1%2520Black%2520Bricks%2520Parts%2520Pack%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%2520831-1%2520Black%2520Bricks%2520Parts%2520Pack%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

eBay links are affiliate links: JunkPal may earn a commission at no cost to you.

## Details

| Field | Value |
| --- | --- |
| Brand | LEGO |
| Set Number | 831-1 |
| Theme | Supplemental |
| Year | 1980 |
| Pieces | 46 |

## FAQ

**Is this LEGO set rare for collectors?**

Yes, this is a vintage piece from 1980 under the Supplemental theme, making it a sought-after item for collectors.

**How many pieces are in the 831-1 pack?**

The LEGO Parts Pack 831-1 contains exactly 46 pieces.

**What theme does this black brick pack belong to?**

This pack belongs to the Supplemental theme and was released in 1980.

---

Full price guide: https://junkpal.ai/products/lego-831-1
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-06-26, based on real sold listings (junkpal.ai)"