You're right the period badges made by Godet have back plate with radial pattern as well as unique hinge and pin design.
Keep it in mind that Godet navy flyer badges were made in exceptionally small quantity(less than 10 known examples to exist today, with sea pilot, land pilot and observer all included), that makes any variation from different hardware setup to poorer details due to lower striking force or tool being worn highly unlikely, that's why I don't think your badge is war time made judging from the completely different hardware and the details.
Here you can see the level of details on period badge.