I picked these up for a couple bucks at the flea market. In my haste, I didn't notice or realize that the roofs are an attempt at a repair. I didn't spend that much so it's not a big deal. the "News of The World " one looks all original and has Lesney stamped on the base. The "Typhoo Tea" one has a plastic running gear and says made in China. My question is did someone luck out and find a plastic base that is almost the same as the original, or is the whole thing a knock off?The casting itself looks identical to the Lesney one. Brighter red paint and the step area is ever so slightly different. If this is a knock off, who makes it? Any help would be appreciated. Also, if you know who makes repro roofs, that would be great as well. Thanks. looking foreword to hearing a bit of history on this curious little piece.