Tony et al - I am not surprised you saw belts of these at the last SLICS. Many years ago, these showed hp
in huge quantity in the United States, sold primarily at gun shows. I thought at the time, knowing they were around all the gun shows, that considering the caliber, it was amazing how much of this stuff England made especially considering the year, 1953.
For the nitpacker collector, like me, I can report five variations from my own collection:
Empty case, Bright Red primer pocket, no red paint ever in the flutes
Dark red primer pocket and dark red flutes
Bright red primer pocket and dark red flutes
Dark red primer pocket and bright red flutes
Bright red primer pocket and bright red flutes
All these except the empty case (I don’t recall where I got that) came from a box of hundreds of these, loose, with a gun show dealer who also have full cans of the long belts, as well as belt sections of ten rounds cut off
of longer belts. You could buy them anyway you pleased.
I agree with Tony. This is probably the most common 7.9 x 57 dummy round from England.