Looks like Fratelli Fanciullacci but no marking

This vase belonged to my parents. It looks like Fratelli Fanciullacci but there are no marks on the bottom.  It could be a cheap reproduction. Who knows.
My parents were in Italy in the late 60's.

Any help identifying this would be helpful. We are selling off their estate piecemeal which is filled with antiques and art from the US and from their extensive travels.

Vase Width 4”  and Height 6.2”

https://modernredux.com/products/fratelli-fanciullacci-roof-tops-decor-bottle-vase-italy-a

Ive seen a few of the Roof Tops but everyone of them Ive seen is marked on the bottom and is similar in shape to the one you posted.

An suggestions on how to clean it?

There is one on Ruby Lane with the speckled base. I guess. Warm water and washing up liquid, rubbed gently.