Any help greatly appreciated. It doesn't have to be accuratly identified in terms of serifs etc. but I really want the blocked 3D effect and the 1950s itallic feel.

Those effects are usually created in a graphics program by outline + extrusion or duplicate as drop shadow.

However there are some retro-style "diner" fonts made to look like signage that have 3D effects. Little Deuce Coupe, Dancing Donuts, Drive-Thru and Lost Wages(neon look) come to mind.