123 Sesame Street

5 moulds appear in no other set

• Minifig Head Special (Bert)
• Minifig Head Special (Cookie Monster)
• Minifig Head Special (Elmo)
• Minifig Head Special (Ernie)
• Minifig Head Special, Big Bird

4 parts come in a colour no other set has for that mould

• Animal, Dinosaur, Raptor, Baby [Plain]Olive Green
• Lamp Post 2 x 2 x 7 with 4 Base FlutesGreen
• Minifig Head Special, Cube [Plain]White
• Torso with Bird Wings [Plain]Yellow

5 printed parts are only in this set

• Brick 1 x 2 with Gold '123' PrintTrans-Clear
• Brick Round 2 x 2 Sphere with Stud with Face, Large Eyebrows Print (Oscar the…Lime
• Tile 1 x 1 Heart with Worm (Slimey) PrintOrange
• Tile 1 x 4 with Green Field, White 'Sesame Street' PrintYellow
• Tile Round 1 x 1 Half Circle with Green Field, White '123' PrintYellow

19 parts appear in only a few other sets

• Tile Special 2 x 3 with 2 Clips without Tab between ClipsGreen · ×6also in 31119 Ferris Wheel
• Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper)Bright Light Yellow · ×3also in 10271 Fiat 500
• Tile 1 x 1 HeartTan · ×2also in 80036 The City of Lanterns
• Brick Special 1 x 1 x 3 with 2 Clips Vertical [Hollow Stud, Open O Clips]Bright Light Orangealso in 71367 Mario's House & Yoshi
• Brick Special 1 x 2 x 5 with GrooveBluealso in 60141 Police Station
• Plate 4 x 12Bright Light Yellow · ×2also in 60244 Police Helicopter Transport, 40533 Cosmic Cardboard Adventures
• Box / Crate with Handholds 3 x 4 x 1 2/3Dark Redalso in 43181 Raya and the Heart Palace, 4000037 LEGO Factory AGV
• Door 1 x 5 x 3 with 3 Studs and HandleDark Bluealso in 41367 Stephanie's Horse Jumping, 41683 Forest Horseback Riding Centre
• Plate Special 1 x 8 with Door RailMedium Nougatalso in 70657 NINJAGO City Docks, 41167 Arendelle Castle Village
• Tile 1 x 1 with Rainbow, Sand Red, Yellow, Dark Azure, Medium Blue, Dark…Whitealso in 21045 Trafalgar Square, 41900 Rainbow Bracelet
• Tile 1 x 2 with Peanut Package PrintDark Redalso in 75547 Minion Pilot in Training, 60307 Wildlife Rescue Camp
• Tile Round 1 x 1 with Chinese Candy PrintWhitealso in 80105 Chinese New Year Temple Fair, 80020 White Dragon Horse Jet
• and 7 more

8 moulds first came out in 2020, including in this set

• Brick Round, Half 1 x 2×2
• Plate Special 8-Sided Crystal/Gem 1 x 1 x 2/3×2
• Tile Round 3 x 3×2
• Animal, Rabbit / Bunny with Face and White Fur Print
• Bar 1L / Stem with 3 Sprouts/Prongs
• and 3 more

59 existing moulds first came out in their colour in 2020, including in this set

• Bracket 1 x 1 - 1 x 1 InvertedMedium Nougat · ×12
• Tile Round 1 x 1 Half CircleBlue · ×10
• Plate Special 1 x 2 Rounded with 2 Open StudsBlue · ×6
• Tile Special 2 x 3 with 2 Clips without Tab between ClipsGreen · ×6
• Equipment CandlestickBlack · ×5
• and 54 more

3 minifigure parts with their print are only in this set

• Hips and Orange Legs with Dark Purple Stripes (Big Bird)Orange
• Torso Blue, Dark Orange, and Lime Striped Sweater Print (Bert), Lime Arms…Lime
• Torso Sweater with Yellow Collar, Blue, White, and Yellow Stripes Print…Red