Emily is a green steam locomotive with one pair of large driving wheels. She was first released in a PlaKids set in 2004 and later released in a regular three-pack in 2008 in Japan, with international versions appearing in between.
Emily was first released as a set-exclusive component of the December 2004 PlaKids Town Emily Set which included an opening brake coach and conductor figure amongst other components. This was the only Japanese release of Emily until the three-pack release in 2008.
Emily is not powered in the engine but rather by a flat AA drive unit in her tender. The large wheels under her boiler which would be the driven wheels on the real locomotive have traction tires so that her piston rods move properly as she rolls. The couplings between Emily and her tender are thicker and were first used on Harvey in 2003. This example dates to November 2004, meaning it was part of the initial batch of sets produced before it went on sale in December.
In 2005 a three-pack style release of Emily with her tender and a matching traditional coach based on the branch line coach tooling was released in European Motor Road & Rail and American Toys R Us Motorized Road & Rail boxes.
This three-pack was included in the 2008 U.K. Tomy TrackMaster range.
In 2005 Emily was released with four curve rails in the United States. For whatever reason, this release uses the same category number as the three-pack release.
As export sale continued, the CE and do not dispose marks were added to the tender and coal cover.
On July 19, 2008 Emily was released in a traditional three-pack in Japan as T-36 プラレールエミリー with a grey brakevan with white roof.