CR10: These cards were created for the purpose of issuing identity cards to seamen during (and after) World War I. Only the years 1918 to 1921 have survived. They have a photograph of the seaman on the back (see below). I got this card from:

Southampton Archives Services
Civic Centre
Southampton
SO14 7LY
Phone: (023) 8083 2251
Email:   city.archives@southampton.gov.uk