The only type of doubling I see on this half dollar reverse is Machine Damaged Doubling (MDD). Larry Nienaber
There are quite a few DDO/DDR in the Kennedy series, like about 15. Larry Nienaber
JPAUL...I think you found a very nice Doubled Die Reverse. Maybe you should send it to CONECA, James Wiles for an attribution. Larry Nienaber
Riff...forgive me, I was confusing DDO-002 with the RDV-002. Larry Nienaber
I don’t think either one of your dimes are the 70 DDR-002. I don’t see the doubling (valleys) on the flame on either one. Larry Nienaber
I see quite a few markers in the CONECA listings...you should be able to attribute this dime using them, even the obverse die changes. Larry...
What I see is an area where the reverse die bounced and pushed up the metal, notice the shinny area from the hit. This is so common on Kennedy...
Very easy to tell from your photos...MDD. Larry Nienaber
It dosent look like a re-punched mint mark...riff is right MDD. If it was an RPM it would be too minor to be considered. Larry Nienaber
non cents...I personally try to stay away from using “MD” because it is also the abbreviation for Master Die, using MDO and MDR for obverse and...
They all look like MDD. Larry Nienaber
The notching on the tail of the 9 may be doubling...check out the 1DO-005 on copper coins. Your photos are way to large to see anything. Look...
I found it very difficult to get a better photo because of the reflection. This half was taken out of the proof set. I think your right about...
Any input for this 68S Kennedy Half Dollar...could this be an RPM? Thank You, Larry Nienaber
Where did you find the reference for those markers?
Where did you find die markers for a 72 DDO half dollar? I looked at my CONECA listed 72 DDO-001 and I see the marker you described...but there...
I still only see MDD with no seperation at all and no notching. Larry Nienaber
I,m sorry but all I see is flat shelf like in your second photo. I don't see any seperation lines, or notching. I don't think this matches at...
I am not so sure this is a doubled die...when I look at the ER of LIBERTY, in your close up photo, it looks like MDD to me, no notching. I don't...
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