overstruck farthing?

Hello guys!I came across this victorian farthing and it seems to me it's an overstruck piece so i was wondering if it was a common practice with the type or it's in fact a rare piece?

 

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looks more like a clash, whats on the other side?

 

oh yea, its a clash, its an upside down outline of the obverse profile...

 

So there's nothing special about it!Thank you for your thoughts!

 

Yes, it's a nice mint error coin.

Edit: Plus some die cracks.

http://www.error-ref.com/die_clash/

 

Interesting die clash, showing obverse profile.

 

Still a cool clash.