Sold Out Castrol Enamel Sign – Sold 1960s Castrol enamel sign, good condition, usually found in this shape/size on the sides of oil bottle crates. Ideal addition to a crate missing its signs or highly damaged, or as a wall filler in a small space. Category: Sold Items Related products Wellsaline Motor Oil Can Read more Bates Motor Tube Patches Tin Read more John Bull Repair Outfit Read more Irish Shell Grease Tin Read more