Deletion of Vittorio Crosten

Comment: In my opinion meets GNG; also meets  #4 as his mounts and frames support works in major galleries and are, themselves, the subject of discussion (for example, https://books.google.com/books?id=GLC0tGVCOPEC&pg=PA92&dq=%22Vittorio+Crosten%22&hl=en&sa=X&ved=0ahUKEwiU8-ns37DSAhWISCYKHc_lB3QQ6AEIHDAA#v=onepage&q=%22Vittorio%20Crosten%22&f=false
Stance: keep
Cited policy: Wikipedia:Notability (WP:CREATIVE)