hm, I don't realy know but the dealer said it's a original one.
It wasn't hard to find,
after I got the M2 I needed a old lends to the body,
so I phoned with my favoryt dealer and told him I need a old 50mm 'cron and
a lightmeter (Leica MR) some days later it was in the mail.
Unfortunately he forgot the sunprotector (please what is the correct english word?).
Yesterday I visited him and he gave me this one.
It's realy nice and fits perfect to the camera.