New old stock Halfords distributor cap HDC542 for many cars from PSA Peugeot 104, 205, 305, 505, Renault 5, Fiat Uno and Panda from the late 1970's, 1980's onwards.
Do look at the pictures to confirm this is the one you need as it seems there are several similar caps. (if you can find a better price, I'll match it!)
Any questions please ask.