Diagon Alley

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

• Brick Round 2 x 2 Sphere with Stud [Plain]Yellowish Green · ×2
• Minifig Head Special, Small Cube (Baby) [Plain]Green · ×2
• Minifig Head Special, Skull [Plain]White
• Neckwear Cape, Standard [Traditional Starched Fabric]Medium Lavender

3 printed parts are only in this set

• Brick 1 x 2 x 5 with Red Windows PrintTrans-Clear · ×6
• Panel 1 x 6 x 5 with Green Windows PrintTrans-Clear · ×2
• Tile 6 x 6 with 'Welcome Harry, To Diagon Alley', LEGO Logo, and 'Harry Potter'…Black

9 parts appear in only a few other sets

• Brick Curved 1 x 5 x 4 InvertedLavender · ×4also in 41734 Sea Rescue Boat
• Panel 1 x 6 x 5Sand Green · ×2also in 70840 Welcome to Apocalypseburg!
• Hips and Legs Under Dress/RobeDark Brownalso in BAM2020-3
• Glass for Window 1 x 2 x 2 Flat with Newspapers PrintTan · ×4also in 75810 The Upside Down, 76403 The Ministry of Magic
• Hair Swept Back with Widow's Peak Chin-Length and Bushy in BackDark Brownalso in 76452 Quality Quidditch Supplies & Ice Cream Parlour, 11379 Bookshop: Book Nook
• Animal, Bird, Owl Small, Angular Features with Dark Tan Eyes, Black Lines…Tanalso in 60247 Forest Fire, 910001 Castle in the Forest, 60366 Ski and Climbing Centre
• Brick Curved 2 x 4 x 2/3 No Studs, with Bottom TubesDark Orangealso in 60228 Deep Space Rocket and Launch Control, 60351 Rocket Launch Centre, 75430 Wicket the Ewok
• Plate Special 4 x 4, Studs on One Edge Plain]Dark Green · ×2also in 75248 Resistance A-wing Starfighter, 70434 Supernatural Race Car, 21324 123 Sesame Street, 910008 Modular Construction Site
• Door 1 x 4 x 6 with 4 Panes and Stud HandleBright Light Yellowalso in 40449 Easter Bunny's Carrot House, 80109 Lunar New Year Ice Festival, 76452 Quality Quidditch Supplies & Ice Cream Parlour, 42699 Beach House with Seals

1 part is otherwise only found in Harry Potter sets

• Hair with Beard and Moustache, Long and BushyDark Brown

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

• Box / Crate 1 x 3×10
• Equipment Ice Cream Sundae Glass×2
• Animal, Bird, Owl Small with Open Wings, Angular Features with Yellow Eyes and…
• Bar, Angled with 1 x 1 Round Plate / Stud on End
• Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides
• and 1 more

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

• Window 1 x 2 x 2 Flat FrontOrange · ×62
• Brick Sloped 33° 3 x 1Dark Brown · ×32
• Brick Special 1 x 4 with Masonry Brick ProfileLavender · ×20
• Plate Special 1 x 2 with Door RailBright Light Yellow · ×18
• Plate Round 1 x 1 with Solid StudDark Tan · ×13
• and 41 more

6 minifigure parts with their print are only in this set

• Minifig Head Daily Prophet Photographer, Goatee Beard, Cheek Lines, SmileLight Nougat
• Minifig Head Garrick Ollivander, Light Bluish Gray Sideburns and Bushy…Light Nougat
• Torso, Jacket over Gold and Silver Vest, Dark Purple Ascot Print, Medium…Medium Lavender
• Torso, Jacket with Pinstripes, Dark Tan Vest, Necktie with Bow Print, Dark…Dark Green
• Torso, Robe Clasped at Neck, with Medium Lavender Fur Undershirt Print, Dark…Dark Brown
• and 1 more