Can Partial Collars Be Any Size? - Coin Community Forum

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Author	Replies: 4 / Views: 1,045
Peaceman Valued Member United States 434 Posts	Posted 02/19/2013 9:37 pm I found this and am trying to determine if it is indeed one. How does an expert come to the conclusion that it is one? Anyone have one that they could share the attributes of? Thanks. Report this Post to the Staff

Mechman Valued Member United States 275 Posts	Posted 02/19/2013 10:55 pm That was done Post Mint on a lathe Report this Post to the Staff
Peaceman Valued Member United States 434 Posts	Posted 02/19/2013 11:15 pm I just found out that the smooth part should be "taller" than the reeded side... (Learn something every day) :) Report this Post to the Staff
pyrbob Rest in Peace United States 1943 Posts	Posted 02/20/2013 06:14 am I was going to point that out on your last post about a partial collar. Sorry, I've been busy lately. When the collar only comes up partially around the planchet the force of the strike pushes the edge into the collar forming the reeding but the area not constrained by the collar flows out to a larger diameter. That is where the term "railroad rim" comes from. When you look at a coin's edge you have a small diameter and a large diameter just like when you look at the edge of a railroad wheel. The large diameter is the area unstruck by the collar. Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 02/20/2013 07:58 am https://www.coincommunity.com/forum...R62_EDGE.jpg https://www.coincommunity.com/forum...ntownguy.jpg https://www.coincommunity.com/forum...ime_1985.jpg Report this Post to the Staff
	Replies: 4 / Views: 1,045

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