Another Lincoln Cent Animation
Feb 8, 2015 18:32:28 #
As the coin dies wear after striking many coins, they tend to crack and chip, and these features are impressed on the coins they strike. Here is an animation showing this progression on a particular coin die, identifiable because it has a Repunched Mintmark (RPM). It's interesting also to see how the RPM changes with wear, becoming MORE evident as the die metal is worked through hundreds of thousands of strikes.
Images are at 5x magnification.
Animated GIFs are not supported on the thumbnail image. Hit download to view animation.
Images are at 5x magnification.
Animated GIFs are not supported on the thumbnail image. Hit download to view animation.
Feb 8, 2015 20:08:59 #
Excellent! How long did it take you to collect these five different coins from this die?
Feb 8, 2015 20:49:24 #
Feb 8, 2015 22:40:03 #
Nikonian72 wrote:
My method of collecting is to search original Brilliant Uncirculated rolls, and put aside the varieties and choice coins for future study or sale. I rarely buy a coin that someone else has found, though I will trade! So with that method, I'd say it took me about 20 years to find these stages. In the process I discovered two "new" stages that have yet to be documented. Overall I have found 13 stages of this particular RPM. Not all of them have dramatic enough changes to include in an animation, so I just included the ones that concisely showed the full progression.Excellent! How long did it take you to collect these five different coins from this die?
Feb 9, 2015 00:17:11 #
Nice illustration of the changing die. I think I am more impressed with your ability to frame each shot, different coin, the same. Are you doing this mechanically with your stage setup or good selective cropping in post?
Feb 9, 2015 00:32:24 #
A-PeeR wrote:
I get as close as I can with framing on the stage, but it requires careful cropping to get it lined up well enough for a progression animation. Rotation is the biggest issue as there is no truly horizontal or vertical reference on the coin. Luckily these are only 10-shot stacks so not too difficult to re-do if I get the rotation too far off.Are you doing this mechanically with your stage setup or good selective cropping in post?
Feb 9, 2015 00:45:57 #
That was really interesting! I am impressed that you were able to get them all lined up so closely in the same position. Does your stage rotate?
Feb 9, 2015 05:13:00 #
Feb 9, 2015 09:53:46 #
Muddyvalley wrote:
Thanks! The stage is fixed for rotation, but I usually place the coin on a disk that is easier to manipulate.That was really interesting! I am impressed that you were able to get them all lined up so closely in the same position. Does your stage rotate?
Feb 9, 2015 12:39:50 #
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