Board Thread:Trade/@comment-38764741-20190313185224/@comment-38598366-20190322043853

found this thread and looked it up. the page says

"The Train Set was first released during the Beta Testing and was later removed from Jam Mart Furniture. It returned on April 18, 2012, and left stores once more on May 23, 2015. It can be won as a prize in The Forgotten Desert.

Notice: Although this item was released during the Beta Testing, it is not considered to be a Den Beta' due to its re-release. Some Jammers might try to trick you into thinking this item is worth more than what it is valued."'