Pearly spiral cone shell

Very beautiful shell in the shape of a pearly spiral cone with pretty iridescent reflections. It could be a comoros puka, without certainty however because I am really not a shell specialist. We very rarely see them of such a beautiful size. I cannot say when it dates from, but it was in the house where I found it for more than 40 years. It is in good general condition but has some perforations and marks. It measures 9.5 cm by 8.5 cm at the base for a height of 7 cm.