[NickM]

I was reading one of my favorite WW2 novels recently & came across an expression: "Pukka Gen"...now I think I that "gen" means something like 'information' or 'intelligence', but what does the expression "Pukka" mean? I must also say that I had seen this expression used in 'Spitfires over Sicily'; there was a passage referring to an enemy radio operatior heckling a Spit patrol with a 'pukka accent';
So...What's it all mean?

thanks!