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Monday, March 7, 2011
20 cent 1990 mdd vs double die
Quite interesting errors here. Mechanical Die Doubling (MDD) vs Double Die (DD) on the same coin. The '0' ( red circle) is mdd. There is no separation on the main image at the serif.On the green circles, there are separation at '9' and '0'.
A coin can have mechanical doubling damage and also be a true doubled die. Both can be found on the same coin and more than one class of doubled die can be found on the same coin. For this particular double die, I would say is double die class 1
Hi nu. Since you commented that this is mdd, I believe you know better that there are 8 classess of 'dd'. May i suggest to you that and to your knowledge all the 8 classess of 'dd' are actually 'mdd'?
I attributed several of my DD coins within the 8 classes of DD in my blog. The MDD I mentioned here refers specifically to mechanically damamged doubling and it is definitely not doubled die which is due to doubling in the working die, master die or the hub itself. Of course if MDD is taken to mean mechanical die doubling, then all are mechanically done but of course we know very well we refer to non-doubled die doubling in this context. By the way, your coin here is not an MDD and the doubling was due to abraded die. Cheers!
It is just an MDD and not a DD.
ReplyDeleteThanks nu. Is difficult to distinguish between MDD and DD. I learn something from you.
ReplyDeleteHi nu. Since you commented that this is mdd, I believe you know better that there are 8 classess of 'dd'. May i suggest to you that and to your knowledge all the 8 classess of 'dd' are actually 'mdd'?
ReplyDeleteI attributed several of my DD coins within the 8 classes of DD in my blog. The MDD I mentioned here refers specifically to mechanically damamged doubling and it is definitely not doubled die which is due to doubling in the working die, master die or the hub itself. Of course if MDD is taken to mean mechanical die doubling, then all are mechanically done but of course we know very well we refer to non-doubled die doubling in this context.
ReplyDeleteBy the way, your coin here is not an MDD and the doubling was due to abraded die.
Cheers!
The abraded die doubling here refers to your 10 sen 1990.
ReplyDeleteIf I am not mistaken, "doubled die" is more appropriate term for it rather than "double die" without the "d".
ReplyDelete