It seems to be marked with the sign of the RAD , possible a holster for a Luger used in Bulgaria ?
If i'm not mistaking this stamp is from the DAF, not the RAD.
Sorry i can't help for the holster, never seen it before...
"I didn't use any weapon in combat during the war, but i killed hundreds, perhaps thousands of men...they're now at the bottom of the sea"
Walter Borg (ex-MI6) Agent and radio operator in Malta, Tunisia and Italy between 1941 and 1945. Arrested twice, tortured twice, escaped twice, survived the war...
"The future torments us, the past holds us, that is why the present escapes us."
In Memoriam :
Laurent Huart (1964-2008)