That is a 215 I believe, I have a similar one on my mantle, kind of neat, mine still works but it very old, yours looks even older, I would guess about 1978 give or take a few years. The pump has a broken top housing, it should have cover over the fan. Many of those parts are no longer available but it looks in good shape, you can still get all the pump parts except the base with the impeller in it. When you open the pump their should be what looks like a pricetag on the inside of the housing with the date stamped in International Format- Day, Month, Year. Also, the air intake should be inserted into the hole on the side of the skimmer, the air will come in through the hole in the back and this hole system makes the intake very quiet.