Button/ pin help - SOLVED

[John Deere Digger]

Found these on an old house site in a field, surface finds before I had a detector. Just trying to date the button or pin don't know which it is, so I can get an idea of the house age. The seated dimes are 1854 and 1875, sorry about the pictures, still working on that.
JDD

 

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[ivan salis]

Re: Button/ pin help

looks like a WW1 infantry headquaters "HQ" collar disk type button -- similar one on e bay for about $8