Some old 303 stuff today

Picked up these from my local gunshop today as I have a deal with them any old 303 ammo that comes in I am the first dib on it usually get it for naught anyway so I am pretty happy with this small find WWI stuff is getting harder to find now days.

There are 2 clips & 9 rounds head stamped;
G 18 F 1
VII Z
Produced by = Government Cartridge factory No.1 (1914-1918)
VII = Mk 7 ball
Z = Nitrocellulose propellant
Clips are stamped IV and a K
(Couple of pics of a round the small stab or crimp mark is another thing I noticed about the round it has 3 of them)

I've seen lots of examples of the bullets being crimped in with just the three small dots... .45ACP for instance...also 1918 marked.