Old City Dairy milk bottle (Derry City)

"The Old City Dairy was a dairy situated on Foyle Road, in the Brandywell area of Derry. It operated from the early/mid 1920s until 1977. I kept this milk bottle because my late father worked as a milkman for the company in the early 1950s.Deliveries were still made by horse & van at that time. On the face of the bottle, in brown lettering , is “Cream Lined Milk”, and below that in a band is “The Old City Dairy Ltd”, fresh cream daily, telephone no.264357/8 Derry. Embossed on the neck is 1 pint – 568ml, on the bottom is 568ml 15mm – 1301-20 with 11 dots beside it."