Thickness and # of reeds on Ike dollars

airplanenut · July 24, 2006 6:30AM

Does anyone know what they are? I can't find it anywhere

MORGANHUNTER2 · July 24, 2006 6:39AM

38.1 mm in diameter 24.59 grams in weight, can't locate the # of reeds either.

mdwoods · July 24, 2006 6:50AM

You might PM segoja and ask him. In case he doesn't see this thread.

messydesk · July 24, 2006 7:56AM

Number of reeds looks like about 190, but I'm eyeballing it, not counting them. I wouldn't be too surprised if it varied. Get a fine point Sharpie® and mark every tenth reed as you count. You'll go less bananas that way.

LALASD4 · July 24, 2006 8:57AM

Dollar (38.1mm diameter) 189 REEDS

ricko · July 24, 2006 9:56AM

Help me to understand why this is important, pertinent or of any value beyond trivia? Thank you, Cheers, RickO

airplanenut · July 24, 2006 10:14AM

Thanks for the replies

But for thickness, I meant thickness of the metal, as opposed to diameter

Coinosaurus · July 24, 2006 10:27AM

Ugh......counting reeds on Ikes.......sound like some kind of punishment.........Jeremy, did you not do your homework again

Conder101 · July 25, 2006 1:50AM

You can't specify the thickness of the finished coin because it varies at every point on the coin. But the average thickness would be the same as the thickness of the original blank.

Now density of the alloy is 8.92 grams/cubic centimeter The weight of the coin is 22.68 grams so the volume is 22.68 / 8.92 or 2.54 cubic centimeters. Now the volume is equal to the area of the circle times the thickness. The diameter is 3.81 cm, the radius is 1.91 cm so the area is 3.14159 X (1.91)^2 or 11.4 cm^2.

Since the volume was the area X the thickness, the thickness would be the volume divided by the area or
2.54 cm^3/ 11.4 cm^2 = .223 cm or 2.23 mm In inches .09 inches just under a tenth of an inch.

kranky · July 25, 2006 2:16AM

This gives me an excuse to repost my favorite method of counting reeds. Flatten a piece of modeling clay (Play-Doh or the like). Pinch off a tiny piece and use it to plug the space between two reeds. Then roll the coin on its edge in the modeling clay, and count them that way. The plugged reed will tell you the start/stop points.

topstuf · July 25, 2006 2:40AM

Who buys Ikes with inked edges?

LanLord · July 25, 2006 3:10AM

<< <i>This gives me an excuse to repost my favorite method of counting reeds. Flatten a piece of modeling clay (Play-Doh or the like). Pinch off a tiny piece and use it to plug the space between two reeds. Then roll the coin on its edge in the modeling clay, and count them that way. The plugged reed will tell you the start/stop points. >>

Very imaginative for a kranky guy, you get to play with playdoe, collect coins and count really small things that are close together. I guess it's that last thing that made you Kranky?

kranky · July 25, 2006 3:15AM

I haven't counted reeds in a while and it makes me cross-eyed. That method isn't my idea by the way, I read it somewhere years ago.

Conder101 · July 25, 2006 4:54AM

I believe the method was published some years ago when McClusky was doing research on te differences in the reed counts between the Philadelphia, San Francisco, CC, and New Orleans mints.

Thickness and # of reeds on Ike dollars

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