"defenzivna ročna bomba – krogla M-12/25"

This grenade is a copy of the English No.15 Mk.1-Lemon and was reproduced in Yugoslavia.
Production started at the end of WW1 in Vojno tehnični zavod Kragujevac and small part of production was in Valjevo.

Length w/fuze : 92mm
Length w/o fuze : 72mm
Diameter : 75 mm
Total weight : 1200g
Filling : 100gram TNT
Fuze delay : 4,5 sek.

Information and photo thanks to Igor.