Signal Electric R-62 Spark Key, ca 1920 - 1960
High Resoultion Images: Image 1, Image 2, Image 3, Image 4, Image 5, Image 6, Image 7.
Signal Electric produced three different versions of this spark key between the 20's and 60's. Thus, there are many of these to be found. The difference between the three models was the size of the contacts. Model R-62 has small 3/16" contacts. Model R-63 has medium 1/4" contacts. Model R-64 has large 3/8" contacts.
This particular key is an R-62 version with the small 3/16" contacts (see Image 7 above). The key has a good positive feel. The key is all original, except possibly the knob, which may have been replaced in its past. It may have come with a Navy style knob (not entirely sure).
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