Sold Out Shell Mex Fuel Price Sign – Now Sold! An early Guaranteed Shell Mex enamel sign. Used to advertise the fuel price per gallon with holes for attaching different roundel signs when the price changed. Great colour and gloss, an excellent example. Category: Sold Items Related products BP Special Energol Pint Tin – Sold Read more John Bull Repair Outfit Read more Thelson Oil Pourer Read more Beckmeter M Pump – Now Sold! Read more