A little help?

[gforce1972]

Curious if anyone has any idea what this might be. Found in a grass lot in PA.

G

 

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[Mud Hut]

part of a hydraulic brake cylinder

 

[AlabamaRelic]

Master cylinder piston.

http://www.treasurenet.com/forums/what/387595-cool-brass-cups-whatever-they-help.html

 

[bigfoot1]

nice id guys...1 minute to solved !

 

[gforce1972]

Wow. Impressive!

G