Cent Blank Found This Week In Box From Local Bank

Good enough. Nice find!

Looks sideways to me
John1

There are no type one planchets. They are still called blanks at that point.

Only after they run through the upset mill, are they called planchets.

Correct. The rim is made thicker on that area by the reduction of the width slightly. When the coin is struck the rim area is formed by the outside filling of the die. All done by the strike.

The proto rim assists this. When a blank is struck the rim area is not as full. Thus the setup process assists this.

Adding more confusion food for thought. NGC has used the terms type 1 and 2 in reference to blanks only.

Type 1 blank comes straight from the blanking press. Type 2 blank is a type 1 blank that has been through annealing and cleaning process.

After going through the upset machine its referred to as a planchet. NGC references "The formation of the rims takes place in the upsetting machine", but like most I prefer to call it the proto rim because its not to be confused with the design rim at this stage.

https://www.NGCcoin.com/news/article/328/


I read an article a while back about the proto rim produced during the upset process as not being a needed step to create a coin with a rim. So why is it used?

Having the proto rim not only aids in the design rim development, but reduces the amount of force needed to create the design rim during the strike. This makes for a faster cycle time with less stress on the machine.

In the end a faster cycle time with less pressure increases production rates with less stress on the machinery. The product, which happens to be coins get out the door faster with less downtime on the machines. Thanks, Doug.