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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.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
LEGO's request form asks for the set number (2773) and each piece's element ID, both listed above.
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Duplo Brick 2 x 2
×1
Duplo Chair 2 x 2 x 2 with One Stud
×2
Duplo Sign Post Tall
×1
Duplo, Sleeping Bag / Baby Pouch with Blue, Lime, Red and Yellow Bunny Print
×1
Duplo Plate 2 x 4 x 1/3 Half Circle with 2 Studs [Thin]
×2
Duplo Pram (Baby Carriage, Stroller) with Yellow Wheels - Complete Assembly
×1
Duplo Umbrella / Parasol Top, Angled
×1
Duplo Brick 1 x 2 x 2 with Bottle and Glass with Straw, Full of Fizzy Red Liquid Print
×1
Duplo Brick 1 x 2 x 2 with Red Grill and Hot Dog Print
×1
Duplo Figure, Early, Hair Bob Light Gray, Red Legs, White Collar and Pendant, Glasses Print
×1
Duplo Figure, Early, with Short Parted Hair Light Gray, Black Legs, Gray Vest, Nose, Glasses Print
×1
Duplo Plant Bush or Tree Top
×1
Duplo Figure, Early with Joined Legs, with White Legs, Duck Bib Print, Black Hair, and White Bonnet (Baby)
×1
Tick each piece as you find it, or mark it missing.
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 LEGOMark 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.
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.
