Where Can I Find an Authentic Hells Angels Leather Vest?

I recently started collecting motorcycle memorabilia and wondered where (or if) I could obtain an authentic hells angels leather vest. I understand this is a sensitive matter, and the club has tight restrictions, so I do not want to wear one out of respect; I'm just curious about its availability for collectors. ¿Are there legal and respectable duplicates to own? Also, ¿what should I watch out for to avoid offending someone or getting in trouble? Would appreciate some feedback from those knowledgeable with motorcycle culture or collectors who have come across similar stuff. Thank you in advance.