Skip to main content
English
You have not chosen yet. Nothing optional is on.
Cookies and details

Monorail Transport Base

Catalogue image of Monorail Transport Base

Monorail Transport Base (6991-1) is a set in the Unitron theme, released in 1994. It has 551 pieces and 4 minifigures.

Add to collection Add to wishlist
  • Number6991-1
  • Released1994
  • Pieces551
  • ThemeUnitron

Product details
Number
6991-1
Name
Monorail Transport Base
Theme
Space › Unitron
Released
1994
Pieces
551
Minifigures
4

BrickLink market data

We hold no current BrickLink prices for this set right now. BrickLink's own price guide is one click away.

View the price guide on BrickLink

The term 'Bricklink' is a trademark of Bricklink, Inc. This application uses the Bricklink API but is not endorsed or certified by Bricklink, Inc.

Can I build this?

Check this set against the parts you already own.

  • We count your loose parts and the copies you own,
  • suggest the fewest copies to open,
  • and list what is still missing.

Sign in to check. Nothing about your collection is read until you do.

Sign in

Pricing
Best price ever≈ 4,255.99 USD (3,822.86 EUR) Mint · net · BrickLink · seen 10/28/2026 Not compared yet, no exchange rate: 1 in other currencies
Current best offerNo current offer we can compare.
Lowest completed sale ≈ 568.56 USD (499.00 EUR) Good · net · BrickLink · sold 6/30/2026

Price history

There are not enough shop prices in this range to draw a chart yet.

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Price statistics by condition
Good · net3 sold 10/6/2026 – 11/5/2026 — not enough to value yet.
Sources BrickLink: 772 · eBay: 254 · Data in Brief: 1

Latest price from each shop

Sorted: lowest price first Show highest first
Countries (all)
Show prices for

Worldwide marketplaces are always shown. Nothing ticked shows every country.

Narrow the countries ticked above to

What each source tells us:

  • Shops: the country they are in, and a delivery within it. None says whether it delivers abroad.
  • LEGO's own shops: one storefront per country, each delivering within its country.
  • Hugendubel: in Germany, delivering to Germany and to Austria.
  • eBay: the country the item is in, and a delivery within the country of the eBay site it is listed on.
  • BrickLink: averages over sellers worldwide - no seller's country and no delivery.

Advertising · contains affiliate links

Data in Brief Sealed · gross · sold 11/1/2020
0.00 PLN
Go to shop
Amazon.com BrickDb shows no Amazon prices. The link opens a search for this set on Amazon's own site.
Advertising
See the price at Amazon

Links to shops in this table are affiliate links. If you buy through one, BrickDb may earn a commission; the price you pay does not change. Rows are sorted by price only, never by commission.

As an Amazon Associate, BrickDb (ThreeB IT GmbH) earns from qualifying purchases.

Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

≈ 2.47 USD (3.53 AUD) Used · shipping 23.58 AUD · seller in Germany · seen 11/2/2026
Advertising
≈ 6.70 USD (9.36 CAD) Used · shipping 26.83 CAD · seller in United Kingdom · seen 11/2/2026
Advertising
≈ 7.31 USD (5.45 GBP) Used · shipping 2.26 GBP · seller in United Kingdom · seen 11/2/2026
Advertising
≈ 7.34 USD (10.47 AUD) Used · shipping 26.32 AUD · seller in United Kingdom · seen 11/2/2026
Advertising
≈ 8.14 USD (7.26 EUR) Used · shipping 14.87 EUR · seller in United Kingdom · seen 11/2/2026
Advertising
Every eBay price we recorded (254)

Asking prices of the eBay listings we recorded. An asking price is what a seller wants, not what the set sold for.

≈ 2.47 USD (3.53 AUD) Good · unknown tax basis · eBay · seen 11/2/2026 · excluded: unknown tax basis
Advertising
≈ 2.48 USD (3.53 AUD) Good · unknown tax basis · eBay · seen 10/30/2026 · excluded: unknown tax basis
Advertising
≈ 2.48 USD (3.53 AUD) Good · unknown tax basis · eBay · seen 10/27/2026 · excluded: unknown tax basis
Advertising
≈ 2.48 USD (3.53 AUD) Good · unknown tax basis · eBay · seen 10/25/2026 · excluded: unknown tax basis
Advertising
≈ 2.48 USD (3.53 AUD) Good · unknown tax basis · eBay · seen 10/23/2026 · excluded: unknown tax basis
Advertising
≈ 2.48 USD (3.53 AUD) Good · unknown tax basis · eBay · seen 10/21/2026 · excluded: unknown tax basis
Advertising
≈ 6.67 USD (9.36 CAD) Good · unknown tax basis · eBay · seen 10/27/2026 · excluded: unknown tax basis
Advertising
≈ 6.68 USD (9.33 CAD) Good · unknown tax basis · eBay · seen 10/30/2026 · excluded: unknown tax basis
Advertising
≈ 6.69 USD (9.36 CAD) Good · unknown tax basis · eBay · seen 10/25/2026 · excluded: unknown tax basis
Advertising
≈ 6.70 USD (9.36 CAD) Good · unknown tax basis · eBay · seen 11/2/2026 · excluded: unknown tax basis
Advertising
≈ 6.70 USD (9.41 CAD) Good · unknown tax basis · eBay · seen 10/21/2026 · excluded: unknown tax basis
Advertising
≈ 6.72 USD (9.41 CAD) Good · unknown tax basis · eBay · seen 10/23/2026 · excluded: unknown tax basis
Advertising
≈ 7.26 USD (5.45 GBP) Good · unknown tax basis · eBay · seen 10/27/2026 · excluded: unknown tax basis
Advertising
≈ 7.29 USD (5.45 GBP) Good · unknown tax basis · eBay · seen 10/25/2026 · excluded: unknown tax basis
Advertising
≈ 7.29 USD (5.45 GBP) Good · unknown tax basis · eBay · seen 10/23/2026 · excluded: unknown tax basis
Advertising
≈ 7.30 USD (10.39 AUD) Good · unknown tax basis · eBay · seen 10/30/2026 · excluded: unknown tax basis
Advertising
≈ 7.30 USD (5.45 GBP) Good · unknown tax basis · eBay · seen 10/30/2026 · excluded: unknown tax basis
Advertising
≈ 7.30 USD (5.45 GBP) Good · unknown tax basis · eBay · seen 10/21/2026 · excluded: unknown tax basis
Advertising
≈ 7.31 USD (5.45 GBP) Good · unknown tax basis · eBay · seen 11/2/2026 · excluded: unknown tax basis
Advertising
≈ 7.34 USD (10.47 AUD) Good · unknown tax basis · eBay · seen 11/2/2026 · excluded: unknown tax basis
Advertising

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

174 inventory lines

Catalogue image of the part Sticker Sheet for Set 6991-1
Sticker Sheet for Set 6991-1 168285· [No Color/Any Color]
×1
Catalogue image of the part Wing, Tail 4 x 1 x 3
Wing, Tail 4 x 1 x 3 2340· Light Gray
×4
Catalogue image of the part Brick 2 x 2 Corner
Brick 2 x 2 Corner 2357· Light Gray
×2
Catalogue image of the part Panel 1 x 2 x 3 - Solid Studs
Panel 1 x 2 x 3 - Solid Studs 2362a· Black
×4
Catalogue image of the part Panel 10 x 6 x 11
Panel 10 x 6 x 11 2408· Trans-Dark Blue
×2
Catalogue image of the part Tile Special 1 x 2 Grille with Bottom Groove
Tile Special 1 x 2 Grille with Bottom Groove 2412b· Black
×6
Catalogue image of the part Tile Special 1 x 2 Grille with Bottom Groove
Tile Special 1 x 2 Grille with Bottom Groove 2412b· Blue
×1
Catalogue image of the part Tile Special 1 x 2 Grille with Bottom Groove
Tile Special 1 x 2 Grille with Bottom Groove 2412b· Light Gray
×16
Catalogue image of the part Wedge Plate 3 x 6 Cut Corners
Wedge Plate 3 x 6 Cut Corners 2419· Black
×4
Catalogue image of the part Plate 2 x 2 Corner
Plate 2 x 2 Corner 2420· Black
×2
Catalogue image of the part Tile 1 x 4 with Groove
Tile 1 x 4 with Groove 2431· Black
×2
Catalogue image of the part Tile 1 x 4 with Groove
Tile 1 x 4 with Groove 2431· Light Gray
×4
Catalogue image of the part Bracket 1 x 2 - 1 x 4 [Square Corners]
Bracket 1 x 2 - 1 x 4 [Square Corners] 2436· Black
×1
Catalogue image of the part Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs]
Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] 2444· Black
×5
Catalogue image of the part Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs]
Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] 2444· Light Gray
×2
Catalogue image of the part Plate 2 x 12
Plate 2 x 12 2445· Light Gray
×2
3 minifigures

Minifigures in this set

Catalogue image of the minifigure Spyrius Droid / Major Kartofski

Spyrius Droid / Major Kartofski

/ fig-006950 /
No retail priceNo recent sales
Catalogue image of the minifigure Unitron

Unitron

/ fig-006952 /
No retail priceNo recent sales
Catalogue image of the minifigure Unitron Chief

Unitron Chief

/ fig-006953 /
No retail priceNo recent sales
An unhandled error has occurred. Reload 🗙

Rejoining the server...

Rejoin failed. Trying again in seconds.

Failed to rejoin. Please retry or reload the page.

The session has been paused by the server.

Failed to resume the session. Please reload the page.