Dinky toys from the 1930s like this petrol tanker were made by Meccano, one of the foremost toy manufacturers of the 20th century. Meccano produced these at their Liverpool Binns Road factory from 1934 until 1979. Some of the toys have corrosion of the ‘Mazak’ alloy they were made from, which has lead to cracks forming. This corrosion cannot be stopped completely, but storing the models in low-oxygen and low-moisture sealed bags can slow it down.