...Actually, your comment has made a couple of little bells go off in my head - Johnny Cash, a Columbia (CBS) artist having singles released here on Philips - but also with regard to the enigmatic Oriole Eurodisc label... For Columbia / CBS bought Oriole around then to press their own stuff in UK didn't they?
So it kind of ties up with that label date wise.
(I am now determined to find one of these CBS blues! :)
Hi MM, this would have been issued in the period (1962-1965) when Philips were distributing CBS (after releasing Columbia product on the Philips label for about 10 years), so look for "420" stamped in the runouts, to confirm a Philips Walthamstow pressing.
I've seen a couple of these CBS blue labels about, but never ventured to buy yet... But seeing CBS vinyl of the time is always good for rock n pop, I think I'll grab one next time I see one :)