COIN ??

[steelheadwill]

This disc is quite purple, though the pix don't show it.
31 X 6 mm and 13 grams. the right weight, texture, & reading for pewter.
Could this be a coin?
does pewter develop a 'crust'? or just swell up & get pebbly like the pewter button shown.
thanks for looking, Herbie.

 

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[Lucas]

Looks like pewter.

 

[CRUSADER]

its bang on size for a Roman Bronze sestertius, but on the light side So if it looks bronze in the hand, might be your oldest coin

The pewter button is late 1700s early 1800s

 

[Mackaydon]

A US walking liberty half has similar stats: 30.6 mm X 12.5 grams (versus yours at 31mm X 12). the 'crust' might be oxidation and the brown caked-in dirt.

 

[dewcon4414]

Copper takes on a purple color as well especially when its being cleaned. Up your way you may have a very old copper coin. Trying to remember my metals.... bronze is copper with a little time and pewter is tin with a little copper. So i suppose that tint could be coming from the copper.

Dew

 

[steelheadwill]

Thanks to all for your replies,
I am going to browse the cleaning tips for this one.
Good day & great digs! Herbie

 

[Kirk PA]

its bang on size for a Roman Bronze sestertius, but on the light side So if it looks bronze in the hand, might be your oldest coin

The pewter button is late 1700s early 1800s

The pewter button is definitely a crude Colonial button (1770s).

Kirk