Robert Hamon and Roy Hicks were the only two names with the RH initials on Steph's contemporary list (from several years ago). I don't collect contemporaries so I do not recognize the marble style.
Your Red Jobber box, I have not seen before. The ones that I have look like this. Yours is smaller & without the 10c. I have ones with MK's, Vitros, Champion, Ravenswood and a mixture.
I hope Gerald can get his MK book published. Last I heard he was trying to contact Beri to meet with her and get final "approval". If anyone knows Beri, maybe they can contact her and ask her to contact Gerald so he can get it done. Thanks.