Coppercoins search descriptors

[TPring]

What is the difference between tilted and rotated?

[makecents]

You taught me something new today T, Thanks!!

Tilted (http://www.error-ref.com/tilted-mint-mark/)

Rotated (http://www.error-ref.com/rotated-mintmark/)

Added: It would appear that a tilted mm is not necessarily always an RPM either.

[mustbebob]

On coppercoins.com (or any other variety website), the terms rotated or tilted means that one of the punches was tilted or rotated in relation to the other. This descriptor is included in the identification of that particular repunched mint mark. The error-ref description does not always refer to varieties. If a single mintmark punching is not perfectly vertical, it could be referred to as tiled.

[willbrooks]

I've been harping on this for years. The word tilted is often used on these descriptions when what they actually mean is rotated. I don't blame you for being confused.

[mustbebob]

This is from the Wexler files and describes why we have tilted and/or rotated repunched mintmarks:

In some cases the mint mark punches are so closely overlapping that it is not possible to give a direction. Often the one punch will be "tilted" or "rotated" with respect to the other. The Wexler RPM Files refer to these as "D/D Tilted" while CONECA refers to them as "D/D Rotated."

[TPring]

Hmmm, was hoping to be able to use that feature on coppercoins.com to weed out various split-serif varieties.

[GrumpyEd]

Added: It would appear that a tilted mm is not necessarily always an RPM either.

To put that in context, you could have an upside down or sideways mintmark and it could be an RPM or not an RPM, depends if there are two or only one with goofy rotation.

[makecents]

To put that in context, you could have an upside down or sideways mintmark and it could be an RPM or not an RPM, depends if there are two or only one with goofy rotation.

Thanks Ed!! After I read the descriptions of each, what I added made complete sense.

[jfines69]

Think of a Rotated MM Punch in the X, Y and Z coordinates... Use X as CCW and Y as CW... The Z is a point on the field in the center of the MM... The Z plane is what the X any Y rotate around... The Z plane runs thru the coin obv to rev or rev to obv and Z does not run N-S/E-W... Hope that helps for the rotated dies... The tilted MM dies are a little different since the location of the X, Y and Z are now in different... I will explain that in a bit!!!

[jallengomez]

Here's a chart that might help a bit. Take a look at the blue and black and how they overlap instead of direction or rotation.

[jallengomez]

When people think tilted, they think rotated. That's not the case. This is an example of a tilted mint mark. Due to the punches being tilted in different directions, the one punch was dominant on the north side, and the other punch was dominant on the south side, making it indeterminate as to which is the primary and which the secondary.

http://coppercoins.com/lincoln/diestate.php?date=1927&die_id=1927d1mm001&die_state=mds

[jfines69]

Here's a chart that might help a bit. Take a look at the blue and black and how they overlap instead of direction or rotation.

Much easier than my suggestion!!!