Letter opener


#1

Poorly made letter opener made from the driving band from a WW1 artillery
shell. Bullet is marked on the base - ARS D 4:07 and is .315 in. dia. Can it be dated?

http://s564.photobucket.com/albums/ss89/majorbeau/?action=view&current=PICT0009.jpg


#2

I think the bullet is an 8mm French Lebel made by Atelier de Constuction de Rennes, Rennes, France


#3

The answer is in the question. “4.07” = 4th Quarter of 1907.

Regards
TonyE