This is a New Old Stock American Bosch B4 magneto distributor cap.It's a very rare item, not available as a reproduction. Used on many US cars from the 20's.It is missing its central brush, but that can be easily replaced.I can send more photos on request PayPal accepted
* AVAILABLE * *Left side: conical for Scintilla and others. 19 teeth, diameter 56mm, hole for threaded part of the magneto: 10+ mm* SOLD * : The one on the right has a straight hole of 15mm and has 15 teeth. Diameter: 47,5mmBoth in good condition. Published price is for one coupling only.Please see my other ..
This is the male part of a RN magneto drive coupling. It probably fits an Alvis as it came with a load of Alvis spares. The bore is parallel and has a keyway and is 15mm dia RN couplings were also used on K3 MG's and I suspect other carsUK postage £3.50