This gold date ring was likely originally used as a class ring, a memento to celebrate an anniversary, or a ring to celebrate the New Year.  Interestingly, the first ever "ball drop" in  Times Square (NYC) was held in 1907.
The gold appears to have been nicely polished and is great for everyday wear. Some important events that happened during the year 1907 include the following:
 
Pablo Picasso completes his painting Les Demoiselles d'Avignon
The London Underground's Charing Cross, Euston and Hampstead Railway opens
Hershey Park opens in Hershey, Pennsylvania
Katharine Hepburn and John Wayne are born
 
Size: Approx. 7 US.
Materials: 10k yellow gold.
Hallmarks: None (acid tested).
Condition: Great. Please view photos for condition report.