Stamm Komp./Gren.Ers.Btl.16 Erkennungsmarke (Venlo)

The dog tag or 'Erkennungsmarke' shows normal signs of wear. The Infanterie Ersatz Bataillon 16 was formed in the summer of 1939 and in November 1942 renamed in Grenadier Ersatz Bataillon 16. It supplied soldiers for 710.Infanterie-Division since the beginning of 1944. In early September the bataillon was moved to Holland and it became the I.Bataillon Grenadier Regiment 1221 which was part of 180.Infanterie-Division. In 1944 and 1945 it fought in the Venlo area. 
In late September Grenadier Ersatz Bataillon 16 was reformed again and supplied soldiers for the 180.Infanterie-Division.
In early 1945 it also supplied soldiers for the 11.Infanterie-Division.
A Stammkompanie was a unit that trained the soldiers. Often the soldier of this kompanie were soldiers who had frontline experience, but no longer were fully usable at the front due to injuries. Of course this changed later in the war as there was a shortage of (front)soldiers and where mobilized also.
The 'O' on both parts of the tag stands for the soldier's bloodtype.