BlockTalk Find Your Set

Free tool

LEGO Missing Piece Checker

Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

Olivia's Observatory

Checking

561810 Olivia's Observatory

20 pieces in 16 part and color combinations, plus 1 minifigure.

LEGO counts 20 pieces. This inventory comes from a separate parts catalog and lists 29, including the 9 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

Show

Piece checklist

Tiles Special 5 pieces

  • Tile Special 1 x 1 with Clip with Rounded Edges White Part 15712 Element 6348055 or 6054551 ×1
  • Tile, Star with Stud Holder, Pin Hole Yellow Part 11609 Element 6184648 ×4

Bricks Round and Cones 3 pieces

  • Brick Round 1 x 1 Open Stud Light Bluish Gray Part 3062b Element 4211412 ×1
  • Brick Round 2 x 2 Dome Top, Hollow Stud Light Bluish Gray Part 30367c Element 4211637 ×1
  • Cone 1 x 1 [Top Groove] Light Bluish Gray Part 59900 Element 4529241 ×1

Hinges, Arms and Turntables 2 pieces

  • Hinge Brick 1 x 2 Base Dark Bluish Gray Part 3937 Element 4211066 ×1
  • Hinge Brick 2 x 2 Top Plate Thin Light Bluish Gray Part 6134 Element 4211881 ×1

Panels 2 pieces

  • Panel 1 x 2 x 1 with Rounded Corners and 2 Sides White Part 23969 Element 6248490 or 6135529 ×2

Plates 2 pieces

  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate 2 x 6 Dark Azure Part 3795 Element 4640891 ×1

Plates Special 2 pieces

  • Plate Special 1 x 1 Rounded with Handle Black Part 26047 Element 6157554 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Azure Part 87580 Element 6029163 ×1

Bricks 1 piece

  • Brick 2 x 2 Dark Pink Part 3003 Element 4517992 or 4497170 ×1

Minifig Accessories 1 piece

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Light Bluish Gray Part 64644 Element 4657366 ×1

Plants & Trees 1 piece

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Magenta Part 24866 Element 6209682 ×1

Plates Round Curved and Dishes 1 piece

  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 ×1

Minifigures 1 figure

  • Zobo - Roller Skate, Trans-Yellow Tile Minifigure, checked as a whole figure ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy