A magnificent streamline style, Lionel O gauge 1930s Union Pacific - City of Denver nos 638, 63.7 x 2 & E636W, die cast and pressed steel passenger set of electric locomotive with three carriages in excellent condition. Includes laminated advertising brochure. Length 41.54 in.
- Diecast - The toy is made by by pouring molten metal into a closed metal die or mould. The first metal used was a lead alloy, but the finsihed product was very soft and broke easily, and was replaced with an alloy of zinc mixed with small amounts of aluminium and copper.
- Gauge - The first model railways had a track width of 48mm (1.89 inches) which was named 1 gauge. With smaller key-wind locomotives a narrower gauge was introduced, call 0 gauge, and then in the early 20th century "half 0" (or HO) gauge was introduced. In Britain and the Commonwealth countries this was called "00" gauge.
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