Soviet Flight School Badge

[War Relics]

I have attached pictures of what appears to me to be a pre war or WWII Soviet flight school badge. I’m not knowledgeable enough to know if it’s authentic or that I’m correct about the time period. From what I can see it looks like it could be authentic. Any assessments would be helpful. 
 

[Tonomachi]

In my opinion it looks genuine based on the wear pattern and patina as well as the style of number font incised on the back.  It looks like there was a loss of red enameling within the star but overall a nice piece.  I don't know exactly what this is but probably an early Soviet flight school type graduation badge.  

[War Relics]

It looked to me like an authentic Soviet flight school badge from the pre to early war period but I know that they have been copied so I tended to be skeptical. Thanks for your assessment. Maybe I should have been okay when it passed the eye test but I’ve been wrong before so I tend to lean towards being cautious. Never hurts to get a second opinion! Thanks again!