I have two of these distributor caps left. Fitted to many British cars in the 30s and 40s.Both are unfortunately missing their carbon central point inside the cap but these can be found through the vintage stockists in the UK.Worldwide shipping.
Joseph Lucas DZ6A Distributor Clockwise Rotation, ECM Curve: 228, Advance1: 16deg +/- 1deg.Lucas part 40226BDistributor Body marked P22 - 5 55 New Old Stock