1940s milk of mag bottle coblt blue ?

[Yucon Cornelius]

I was in illinois at my mom n dads, treasurehunting in her yard, was digging a strong iron signal. after digging up a stovetop, bout 6inches more down, i hit this bottle. its a beautiful blue, half the cap is rotted away.
mom is a bottle collecto and thinks it to be from the 40's. just wanted to share, the scan does it no justice, my camera is ooc.
thanks for looking, HH

 

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