Vintage Stewart Warner 819893 “V” series tachometer sender. 6 or 12 volt 4 cylinder or 8 cylinder with dual points and dual coil. Nice shape in original box with instructions. See pictures. Feel free to ask questions. No reserve. 

I am just starting to list a bunch of early automotive accessories from a great collection. Keep an eye on my upcoming auctions. All listings with the green background are no reserve auction and start at $0.99.