hi sergey
just so that you get my e mail correctly to you listen up please i dont consult you or any dealers you mentioned it could be fifteen years this still does not mean the ring is good its still a newly made copy i could care less who you or your friend bought this luft ring from take it back and get a refund or keep it as a period made ring and be happy i also buy from above named dealer but the only difference between me and your friend is i know what is real period and what is not we are not here to judge wrongly but just to try and help people like you a non believer but hey like i said before if the heat is to much in the kitchen then get out before you get burned i rest my case have a great day any way andy militarynut