Please do not get too confused, this is like my 4th or 5th posting of these. They just keep growing!
7.62x51 tracers from the British Tracer Trials from the early 60’s.
There are 22+ color variations of the Dark Ignition Long Range Trials with head stamps K/61/L5A1.
These are the 3 that are newly sectioned.
And for those who are following, trying to keep track . . .