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The Billboard Engine: Seen on various billboards on Sodor. Unknown basis. The Itsy-Bitsy-Speeder: Seen on the cover of Sandy’s book in the episode “Sandy’s Sandy Shipment”. Unknown basis, likely a freelance design. The Purple Engine: Seen in a traffic jam in the episode “Nia’s Perfect Plan”. Shares basis with Henry, although like Henry, their wheel configuration is a 2-6-2 instead of a 4-6-2.
