Headstamp 1 WWG 310 CK, ICI on primer
My guess is WW GREENER, 310 CATTLE KILLER, made by KYNOCH
is the correct??.
Headstamp 2 RIGBY 350 MAGNUM NITRO, is this made by Kynoch??
Headstamp 3 No 3 GIBBS TRADMARK [with possibly gz in heart shaped shield] who made it??
Headstamp 4 WR 318 [Westly Richards ] who made it ??
Proprietry Headstamps made under contract for them by who??