This your Pro Football?
That coil sleeve shouldn't be metal for that era game (and judging by the coil label, looks like it may have been an after-market replacement coil or such, which may explain why).
But the sleeve is mounted upside down anyway. Perhaps when the replacement coil was installed, it got goofed up. The 'lip' end of the sleeve should go towards the coil stop, and the other end of the sleeve should stick through the coil bracket (where the plunger is).