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to as the "Teardrop" bell by railroaders and signal fans alike because of its unique shape and thus the name has stuck. This bell has appeared on advertising literature for railroad signals as far back as the 1920s as far abroad as Chile and Italy on early wig wag crossings and flashers. There have been subtle variations in the Teardrop bell over the years ranging from different sized electric coils, inclusion of the patent date on the rain hood, as well as a very early version with a less characteristic rain hood that simply read "UNION, patent

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