Vintage John Bull Tyres Enamel Sign. Approx 18 inches by 18. Great strong colours some age related chips on edges. The item “Vintage John Bull Tyres Enamel Sign” is in sale since Sunday, November 11, 2018. This item is in the category “Collectables\Advertising Collectables\Transportation Advertising\Petrol/Oil Advertising”. The seller is “jsmyth3326″ and is located in Cookstown. This item can be shipped to United Kingdom.