Author Topic: Edge Pattern for Identification  (Read 987 times)

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Offline dheer

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Edge Pattern for Identification
« on: April 26, 2014, 06:56:56 PM »
I came across an Rs 5 coin of Republic India with this edge. It is not normal for a Rs 5 Coin to have this type of edge ... i.e. there is no coinage in Republic India that has this type of edge ... As the Noida mint was also minting for other countries, I suspect there are some other countries / coinages where this type of edge is used ...
Request members to point out countries / coinages where this type of edge is used ..

http://coinsofrepublicindia.blogspot.in
A guide on Republic India Coins & Currencies

Offline davidrj

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Re: Edge Pattern for Identification
« Reply #1 on: April 26, 2014, 08:04:46 PM »
I have a couple of silver plated Victoria OH pennies with similar edge modification - modified for jewellery use I guess



David

Offline capnbirdseye

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Re: Edge Pattern for Identification
« Reply #2 on: April 26, 2014, 11:04:26 PM »
That is probably done with 'knurling' tools, I have some for use with my lathe that can create similar patterns
Vic

Offline dheer

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Re: Edge Pattern for Identification
« Reply #3 on: April 27, 2014, 05:02:28 AM »
The Edge images I have put up are of 1997 definitive coin ... so any coins / medals with this type of edge in this period ...
http://coinsofrepublicindia.blogspot.in
A guide on Republic India Coins & Currencies

Offline malj1

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Re: Edge Pattern for Identification
« Reply #4 on: April 27, 2014, 08:42:22 AM »
I agree with Vic, this is a workman's piece or 'sport'. The edge has been modified with a Knurling tool.

Knurling is carried out by means of hardened wheels which carry a series of shallow, diagonal teeth; those of one wheel slanting in the opposite direction from those on the other.
Malcolm
Have a look at  my tokens and my banknotes.