16. T.E. 62
as RyanE already stated its the Train-Bataillon no. 16, Ersatz department, weapon no. 62.
3. A.F.E. 3. 239.
Footartillery regiment no. 3, Ersatz-Bataillon, battery no. 3, weapon no. 239.
This would indicate that the barrel band was originally part of an Gewehr 91 since these were...