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MTH Railking 4-6-2 Torpedo Steam Engine w/Proto-Sound 3.0 30-1721-1
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![️820 The DCC/DCS Switch Found on the MTH Protosounds 3, O-Gauge 3-Rail](https://i.ytimg.com/vi/AfX7SavSJow/maxresdefault.jpg)
️820 The DCC/DCS Switch Found on the MTH Protosounds 3, O-Gauge 3-Rail
MTH Proto Sound 1 - Using Alkaline vs. MTH 8.4v Rechargeable | O Gauge
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