Looks like a Hercules bike, built before the Raleigh takeover in 1960. It has a Brampton shifter and English components, so it's British, and before 1960. Is the rear hub a Sturmey Archer? I'll bet it is, and it will have a date code on the shell. I'd offer 50 bucks for it, if that's the bike you want. But to flip it,no. I zoomed in on the rear hub but couldn't make out the wording.