HMS Glorious at Boka Kotorska, Yugoslavia (Montenegro) in 1929.

(Photo courtesy of Vladimir Tarnovski)

 

HMS Courageous, date and location not available.

 

HMS Courageous, date and location not available.

 

HMS Courageous, date and location not available.

 

HMS Courageous, date and location not available.

 

An easy way to identify which carrier is which, this photo shows close up views of the bows of both ships.
Information provided by the National Maritime Museum in London is as follows:
HMS Courageous has a 6ft upright nose to her bow and that has always been the case. 
HMS Glorious has a pointed nose at the bow and it has always been so.