1931 Photograph of Flying Saucer Over Colorado Surfaces for First Time

• When: September 1931
  
• Where: Colorado (possibly Gunnison)
• What: Flying disc
  

A flying disc was seen over Colorado in 1931, according to a hand-me-down family photograph just now shared with MUFON (case 83550). In the photograph, a flying disc with an antenna or wires at the top can clearly be seen, and alongside it another thin object can be seen (but this could possibly be a passing bird or plane):

https://www.mufoncms.com/files_jeud8334j/83550_submitter_file1__IMG0789.JPG

https://www.mufoncms.com/files_jeud8334j/83550_submitter_file2__IMG0790.JPG

This is a picture of a photograph my great grandfather reportedly took. The photograph has been handed down to me.

What do you think this 86-year-old photos shows? A flying saucer piloted by an alien?  An advanced US military craft? Or could this be something easier to explain, like a helicopter? Share your theories in the comments below or on Facebook, Twitter, or Instagram.