

Please help me identify this token. I have looked all over the Internet but not found a match. I have found some vaguely similar Vatican City tokens, but nothing quite right.
It is 23mm in diameter. Unfortunately, I do not know its composition, diameter, or anything about its origins.
I presume it was to commemorate the transition from Pope John Paul II to Pope Benedict XVI and issued by Vatican City (maybe). But oddly is says ‘An. XXVI’ which I believe is 2004 not 2005 when John Paul II passed away - assuming this refers to his regnal years.
Any information about it would be greatly appreciated. Thank you in advance!