# LEGO 12V Rail Contact Wire with Transformer Connector with Cap (706-3) — resale value

**LEGO 12V Rail Contact Wire with Transformer Connector with Cap (706-3)** — resale value from real closed eBay sales.

Values are medians of real closed eBay sales, updated 2026-06-25. 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%2520706-3%2520Rail%2520Contact%2520Wire%2520Transformer%2520Connector%2520Cap%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%2520706-3%2520Rail%2520Contact%2520Wire%2520Transformer%2520Connector%2520Cap%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

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## Details

| Field | Value |
| --- | --- |
| Brand | LEGO |
| Set Number | 706-3 |
| Theme | 12V |
| Year | 1974 |
| Pieces | 1 |

## FAQ

**How rare is the LEGO 706-3 piece?**

This piece is from the 1974 12V theme and is listed as a single piece, indicating its rarity.

**What is the theme of this item?**

The theme for this LEGO part is 12V.

**What year was this item released?**

This specific piece, 706-3, was released in 1974.

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Full price guide: https://junkpal.ai/products/lego-706-3
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-06-25, based on real sold listings (junkpal.ai)"