Model 39 grenade
The Model 39 "Eihandgranate", M39 or Eierhandgranate 39 was a German fragmentation hand grenade introduced in 1939 and produced until the end of World War II. Wikipedia
Designed: 1939
Diameter: 60 mm (2.4 in)
Filling: Donarit - (relatively similar to amatol)
Mass: 230 g (8.1 oz)
Place of origin: Nazi Germany