✅ SOLVED copper octagons

[Dale32]

I found these on two separate trips. They appear to be copper; maybe brass. One is marked with "C.G. HUBCE PGHPA." Any ideas?

 

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[NOLA_Ken]

They're tacks from an asbestos shingled roof....

http://www.treasurenet.com/forums/what/303364-what-these-things.html

 

[Gunrunner61]

Agreed....