I dont know where to begin w/this one

[Aolbrantz]

I don't know where to begin w/this one

Metal detecting along rivers edge. This appears to be cast iron? Also has some green colored glass on one end? I do not know how to safely remove corrosion for further inspection. Ideas all appreciated! Thank you.
Adam, GB, WI

 

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[pong12211]

You will probably need to try to add the photo again before anyone can help you..

 

[Aolbrantz]

Guess I don't know how to post a picture? Something I'm not seeing?

 

[taz42o]

click the picture icon at top.

 

[dieselram94]

Copy and paste works too...

Sent from my SCH-R930 using Tapatalk 2

 

[NOLA_Ken]

Looks like melted slag to me.