Tent vent??

[Vonclemen29]

Well went out yesterday to my spot an found this. My dad said a tent vent, I dunno but I've found a few of these here. Any input would be helpful







This is the rest of what I found

 

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[doublet2a]

Looks like a piece from an old umbrella .

Tim

 

[taz42o]

http://www.treasurenet.com/forums/what/321303-brass-parasol-slides-i-just-don-t-see.html