A milk churn seal. "The milk is received in churns twice a day from a number of farms in various parts of the country. All the churns are sealed with a leaden seal, supplied by the receiving firm, and are further identified with marks by the farmer who has despatched them." THE MILK INDUSTRY, Henry Lee, p.346-350, Britain At Work - a pictorial description of our national industries, (1905) Publisher: Cassel and Company Limited, London. (Information provided by Darron Barnes)