This is the first label I've found with the margin text that was introduced in ca. April 1948: “All rights of the manufacturer and of the owner of the recorded work reserved. Made in England. Unauthorized public performance, broadcasting and copying of this record prohibited.”
See also the new label guide at https://www.45worlds.com/78rpm/about/decca.
The database is missing Decca F.8851, which might already show this margin text.