No idea about the wing. it was like that when I got them. I will take them to a jeweller. My research on him regarding spoons is vague too. Thanks for your advice.

No, they are not marked. I have read that he did not always mark his work. I have attached a photo.

Second try!

I have attached a photo of the figurine. There are no other marks on it.

Second try with photos.

No, they are not marked. They are in their original box, though, which is clearly labelled Giacinto Melillo, Napoli.