A nice and uncommon commemorative NSKOV Tinnie here, clearly inscribed "Frontsoldatentreffen - Kreuzburg o.S. - Sept. 1936". Working pin and catch to the reverse. Stamped brass construction with a soldered pin. 
 
The National Socialist War Victim's Care (German: Nationalsozialistische Kriegsopferversorgung, NSKOV) was a social welfare organization for seriously wounded veterans as well as frontline fighters of World War I. The NSKOV was established in 1934 and was affiliated to the Nazi Party.