Walther's website advertises 10rd in the Creed Double and 16 in the Creed. Others advertise both. So I must recant what I said originally. I'm truly confused myself on this one.

Yes the 16 round magazine can be used in this gun. Walther makes two model on with a 10 round magazine and one with a 16 round double stack magazine. They will interchange as they are the same gun, just different magazine so yes it will work in your gun. Hope this helps.

No this is the Creed Double, the magazines are not interchangeable with the larger capacity Creed.