my second dual die find of the day!

No...you titled the post "my second dual die find of the day!". What exactly is a "dual die" coin?

EDIT: Dang! ...missed my auction!

 

Log in or Sign up to hide this ad.

was it for a doubled die coin?

 

Yes, it is. But I think many are looking at the wrong signs. The "6" for instance, if you look at the largest blowup of the photo in #11, it is the thin faint line running a little east to the left hand side, not the flattened area on the right hand side. All of the numbers have a similar line. It is hard to see because the height was very close. You can similarly see the faint line on the lettering also. IMO.

Jim

 

What is shelf like mean

 

It means the second part that people think is doubling is lower than the other part, so it looks like a shelf, like it's a set of stairs. see the link, the Strike Doubling part, especially the pic of the 1937 buffalo.

http://hermes.csd.net/~coneca/content/StrikeDoublingFlyer-PDF.pdf

 

You're right Yakpoo, it is mechanical doubling, MD, and is not an error.

 

This may clarify things...there may be both DD and MD happening here (sorry for the small font).

 

really? this is mechanical doubling? then i guess coppercoins has pages of MD coins listed as DDs. and wexler is wrong, too.

 

It appears to be a doubled die which also has machine doubling.

 

I think if you can zoom in enough on my small fonts, you'll see which is DD and which is MD. I think we're in agreement.

 

The images make it tough for folks to agree.
Class II doubling can be hard to see even with good images.
I would have bet MD at the start of this thread.

 

I don't know, are they wrong?

That area around the date, is flattened and looks step like, and is indicative of mechanical doubling, as seen in this diagram:

 

This is definitly a doubled die. BU, there might be machine doubling but it is on the other side of the numbers than the doubling. Red arrow is MD. White arrow is doubled die.

 

The 9 shows it even better. Also look at the extra thickness. The top of the upper loop of the 9 is the regular thickness. Compare it to the rest.

 

Sorry, BU, but Riff's coin is a doubled die and a rather obvious at that (at least when in hand).

 

Gee. I got quite a few 62 proofs. Guess I should go see if I can get rich!

 

Yours is a Doubled Die, his is a dual die.

 

I don't know if it is a dual die. From what I see, it is a coin not a die. Copper dies would totally suck at minting coins.