I found this stick pin on Snyder’s Treasures Militaria website (website attached below).
It’s listed under “Rare and Unusual stick Pins”http://snyderstreasures.com/pages/stickpins.htm#rare
The photos on his website look exactly like the stick pin I have posted here.
German World War Two Foreign Volunteers SS NSDAP - OD Viking Ship w/ Swastika Membership Stick Pin. It features this Viking Ship with a Swastika on the sail with NORRTALJE & 1935 below it.
(The item was sold so I don’t what the selling price was.)
Duzig, I'm not sure I agree with you that the stick pin I have posted is not an authentic Third Reich Period pin. I looks very good to me in hand.