The green trees are common in older sets. No one actually recalled the original packaging, so it is hard to figure out what it really looked like. Not sure whether mass production is confirmed. I know that older Plarails were never made with ABS plastic, so there is no gloss. (also means less prone to yellowing, and more susceptible to scratches). Packaging wise, there could be a possibility that the items are boxed in bigger Tomica-sized boxes. Not even the advertised picture was in any packaging.
Those houses are small, but they can be stacked up in many irregular shapes and sizes. (just like old Lego Duplo)
Those houses are small, but they can be stacked up in many irregular shapes and sizes. (just like old Lego Duplo)