Aluminum it is - this one is just polished up and pretty for the picture! I polished mine when I restored it, quite by accident really. I was trying to remove years of caked on soap scum around the top and underside of the agitator with Comet Bathroom cleaner and it made the aluminum very bright and clean, but sadly, without the pretty sparkle-stars like in the POD ad. The saddest part is, it doesn't last and detergents quickly dull the sparkle...