# LEGO Reznor Knockdown Expansion Set (71390-1) — resale value

**LEGO Reznor Knockdown Expansion Set (71390-1)** — resale value from real closed eBay sales.

Values are medians of real closed eBay sales, updated 2026-06-22. 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%2520Reznor%2520Knockdown%2520Expansion%2520Set%252071390-1%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%2520Reznor%2520Knockdown%2520Expansion%2520Set%252071390-1%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 | 71390-1 |
| Theme | Super Mario |
| Year | 2021 |
| Pieces | 862 |

## FAQ

**What is the piece count for the LEGO Reznor Knockdown Expansion Set?**

This Super Mario set, number 71390-1, contains 862 pieces.

**Is this set from a recent release year?**

Yes, the LEGO Reznor Knockdown Expansion Set was released in 2021.

**What theme does the set belong to?**

The set belongs to the popular Super Mario theme.

---

Full price guide: https://junkpal.ai/products/lego-71390-1
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-06-22, based on real sold listings (junkpal.ai)"