Antique Telegraph Spark Key Signal Electric Company Chrome Plated Early 1900s

up for auction is a very nice Chrome plated signal electric Company spark Telegraph key. these keys had larger contacts than landline Telegraph instrument keys and were used to control high current and high voltage used in early spark gap radio transmitters prior to 19 20. this would make an excellent addition to any collection of antique radio early wireless or Telegraph instruments. it is missing the spring which is an easy replacement item. please inspect all photos of item as they are part of item description. winning bidder will pay $ 24.99 for very careful packing and shipping through USPS Priority Mail which includes both tracking and insurance to Continental USA only. no international bidders please. all items are sold as is and as antiques. no returns. thanks for looking!