Here's a small porcelain spool made by Siemens-Schuckert Werke (shown in 1911 catalog). Marked with the company logo inside "Y" shaped slotted base that converges into small 11/16" pinhole. These were offered in 3 sizes and were rated up to 1000 volts. These were used with special machine screws that secured onto "L" shaped metal brackets. Measures 1.5" wide x 2" tall. Mint condition. First email gets this unusual early German porcelain spool for the reduced price of only $30 plus 8.00 shipping. Thanks! |