1989-D Dime Tapered Planchet - Coin Community Forum

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Author	Replies: 6 / Views: 6,410
lperry3 Valued Member United States 57 Posts	Posted 05/10/2008 8:34 pm I was rummagin through my coins today and picked this dime up and thought- why the heck did I save this? Then finally realized it was an oddity. The edge behind Franklin's head has regular thickness. The edge in front of his face however is as thick as a quarter. There is a thin sheet of metal that sticks up above the obverse side of the coin on the thick side. I think I remember how I first noticed this coin, it scratched me! The thin sheet has grooves on the coin facing side of it, blood along the top.;-) Think it may be worth something some day, say 100 years from now? Or should I just keep in my treasure chest? Here's some pics. Report this Post to the Staff

pyrbob Rest in Peace United States 1943 Posts	Posted 05/10/2008 9:10 pm The high edge of the coin is called a fin. When pressure is applied to the planchet by the 2 dies the metal is moved into the die recesses forming the design. The reeding is formed by the third die which is called the collar. When the design is fully formed but the pressure still continues to increase the metal needs to go somewhere so it squeezes up along one of the dies creating a thin lip called a fin. Your coin could also be a tapered planchet but you will have to look at it and see if it is tapered without taking the fin into account. Let us know. Report this Post to the Staff
lperry3 Valued Member United States 57 Posts	Posted 05/10/2008 9:24 pm Hi pyrbob, I'm new at this so bear with me. I was going to originally post this picture but it was blurry. I took several shots to no avail. You might be able to make out what I presume to be a taper. Thanks for the information on the fin. Perhaps this will help those that are interested. Report this Post to the Staff
pyrbob Rest in Peace United States 1943 Posts	Posted 05/10/2008 9:29 pm Sorry but the picture is just too blurry for me to tell. What I would look for is go to the edge right before the fin starts and compare that to the thickness on the side opposite the fin. If it is a tapered planchet then you should see a visible difference between the thickness of these two areas. Not to burst your bubble but my guess is you have a coin with a fin and not a tapered planchet. But a fin like this is still a keeper and a nice find to me. Report this Post to the Staff
lperry3 Valued Member United States 57 Posts	Posted 05/10/2008 9:47 pm You are absolutely correct, it is a fin. I assume tapered planchets are typically on the thin side? After your post I studied the coin through a magnifying glass and there is actually a fin on the reverse side too. At first the top fin didn't look to be enough to cause the distortion. I love this forum! Thanks for the learning experience. I have a long long ways to go yet. Please bear with me. Report this Post to the Staff
pyrbob Rest in Peace United States 1943 Posts	Posted 05/10/2008 9:52 pm It's our pleasure. We all love this forum. Asking questions is how all of us have learned in the past. But now we can get and give much faster replies. We don't have to wait to talk to someone anymore. Keep asking those questions. Report this Post to the Staff
foundinrolls Pillar of the Community United States 3507 Posts	Posted 05/11/2008 12:04 am Hi, Not that it matters if I say this but that was one of the best exchanges of information I've seen! Great Thread! Have Fun, Bill Report this Post to the Staff
	Replies: 6 / Views: 6,410

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