I think this is possibly a 14HP Crossley radiator cap.The Dia. is 1-7/8". It has a 20TPI thread.The bakelite part is excellent, the base has a nick to one edge, but it should still screw onto a radiator.I can post this and I accept PayPal.
An original Jaeger 8 jour car clock. It is in excellent condition and full working order, however it has not been overhauled so no gurantees. Reeded bezel is 95mm diameter and it would fit a dashboard hole of about 80mm diameter. Black dial fully marked JAEGER PARIS and original bevelled glass. Buyer pays shipping costs.