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Author	Replies: 16 / Views: 3,282	Page: of 2
paemurse New Member United States 9 Posts	Posted 10/13/2015 4:00 pm I have been on the site numerous times, and felt it was time to join. I've found the forum to be very informative and helpful. I have a question regarding a 2008 S James Monroe Proof Presidential dollar. The Coin has three raised ridges along the edge @ 12, 4, and 8 o'clock. Could someone please tell me what could cause them? Report this Post to the Staff

biokemist6 Bedrock of the Community United States 12437 Posts	Posted 10/13/2015 4:14 pm The edge lettering on proof dollars is applied via a segmented collar, the vertical lines you see are the separation points for the collar segments. The edge lettering for business strike dollars is applied through a different process, the planchets are force-spun through a pair of bar dies before they are struck into coins. Report this Post to the Staff
teo2015 Valued Member United States 214 Posts	Posted 10/13/2015 4:25 pm to CCF! Report this Post to the Staff
paemurse New Member United States 9 Posts	Posted 10/13/2015 4:39 pm Thank you for the speedy reply! So the separation points are just a normal characteristic on proof coins? Report this Post to the Staff
jbuck Moderator United States 187702 Posts	Posted 10/13/2015 5:54 pm to the Community! I moved your welcome post to the appropriate forum for posterity. Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
tweak800 Pillar of the Community United States 1249 Posts	Posted 10/13/2015 6:08 pm Correct it is normal for proof dollars with edge lettering. It is applied at the same time as the dies so that they have correct spacing and correct orientation "position A/ Position B" Since they are special coins, proofs, they get special treatment to make sure they are perfect so if you do ever find an error on a proof it is usually worth more ;) Report this Post to the Staff
CelticKnot Bedrock of the Community United States 12813 Posts	Posted 10/13/2015 7:14 pm biokemist6 and tweak800 have it right. Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 10/13/2015 7:58 pm Here is an image from the San Francisco on the three piece collar they use for the edge letters on the proof dollars: Report this Post to the Staff
Slamnbass Pillar of the Community United States 3644 Posts	Posted 10/13/2015 8:55 pm Cool pic coop Report this Post to the Staff
jbuck Moderator United States 187702 Posts	Posted 10/14/2015 10:35 am Yes, very nice. I have always wondered what one looked like. I know, I could have searched, but this is easier. Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
Debrajc Pillar of the Community United States 4211 Posts	Posted 10/14/2015 10:39 am peamurse and Richard...thanks for the picture~!! Report this Post to the Staff
bpoc1 Rest in Peace United States 4078 Posts	Posted 10/14/2015 1:35 pm Is the three piece collar squeezed against the edge? Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 10/14/2015 1:55 pm No the edge is squeezed against the three piece collar. During the striking the collar just sits there while the plnchet metal is forced outward against it. Then after the strike as the anvil die moves up (or the surrounding collar moves down) the segmented collar opens upward and slightly away from the coin so it can be removed. then they close back down and the next planchet is placed in the coining chamber. Report this Post to the Staff
bpoc1 Rest in Peace United States 4078 Posts	Posted 10/14/2015 4:13 pm Thanks Conder. I'm a visual learner, when it comes to mechanical process, so I would love to see this in operation. My first thought, would this not take some time for each proof coin? Been to the Philly Mint and Denver Mint as a young teenager but, with no knowledge or interest. The only interest then was girls. Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 10/14/2015 8:20 pm Striking proofs is a MUCH slower process than making business strikes. Business strikes are 13 coins per second while proofs are closer to 13 seconds per coin. Report this Post to the Staff
Cascade Pillar of the Community United States 7390 Posts	Posted 10/14/2015 8:24 pm And the pres RP's are somewhere in the middle lol Edited by Cascade 10/14/2015 8:25 pm Report this Post to the Staff
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