File:HMS Magnificent (Majestic-class battleship).jpg

the ship shown is not the hms magnificentn in fact it is the hms mars. janes fighting ships of ww1 states that there is one funnel band for hms magnificent and three bands for hms mars.

Summary
HMS Magnificent (Majestic-class battleship)

Source: Navyphotos

HMS Magnificent was scrapped in 1921, so this photo is surely in the public domain.