On the 15th December this image was posted, dated to the 1920s-30s:
It shows the Arch of Titus, and behind it the Colosseum, from the unusual vantage point of the Palatine hill. But at this date, of course, it also shows the remains of the ancient Roman fountain, the Meta Sudans, which was demolished soon after by Mussolini. Unhappily the image is too low-resolution for us to see much of it. But each photo is precious.