Tridmn Posted July 17, 2019 Share Posted July 17, 2019 I have in my possession a bicentennial quarter which is supposed to have a denver mint mark. However, the d is completely closed. Any value to this coin as is? Link to comment Share on other sites More sharing options...
Tridmn Posted July 17, 2019 Author Share Posted July 17, 2019 Also what appears to be ddo on the date. Especially on the 7s Link to comment Share on other sites More sharing options...
Just Bob Posted July 17, 2019 Share Posted July 17, 2019 Don't forget: pictures of the entire coin - obverse and reverse- help us to form more informed opinions. That said, I believe that a combination of wear, slight damage, and die wear are responsible for the condition of your coin, including the date and mint mark.That is, assuming the reverse shows comparable wear to the obverse. Link to comment Share on other sites More sharing options...
Tridmn Posted July 17, 2019 Author Share Posted July 17, 2019 Give me just a minute and I will have pics of reverse Link to comment Share on other sites More sharing options...
Tridmn Posted July 17, 2019 Author Share Posted July 17, 2019 So, what do you think of the reverse Link to comment Share on other sites More sharing options...
Greenstang Posted July 17, 2019 Share Posted July 17, 2019 That's a broken post on the MM, quite common. The date may have some MD but not DDO Link to comment Share on other sites More sharing options...
KarenHolcomb Posted July 17, 2019 Share Posted July 17, 2019 I just call it a Filled D. I guess eceryome has their go-to terms. You will come across many, many just like it and not just on Quarters. Link to comment Share on other sites More sharing options...
Tridmn Posted July 17, 2019 Author Share Posted July 17, 2019 Still learning... MM and MD? Not sure what that is. That's why I'm here though. Link to comment Share on other sites More sharing options...
KarenHolcomb Posted July 17, 2019 Share Posted July 17, 2019 MM=Mint Mark MD=Machine Doubling Link to comment Share on other sites More sharing options...
Tridmn Posted July 17, 2019 Author Share Posted July 17, 2019 So what's the difference between MD and DDO or DDR? If its doubled, then its doubled right. And what do you mean by broken post? The die was broken? Link to comment Share on other sites More sharing options...
coinsandmedals Posted July 17, 2019 Share Posted July 17, 2019 I think this article may be of some help. Doubled Dies vs. Machine Doubling Link to comment Share on other sites More sharing options...
Greenstang Posted July 17, 2019 Share Posted July 17, 2019 That is a good article about MD and DD but there is another form of doubling that adds no value to the coin and that is DDD, (Die Deterioration Doubling or Die Fatigue) which is caused when a die is overused from striking so many planchets and the devices start to break down. The metal will start flowing towards the rim causing a doubling effect. Tridmn- You are right about the broken post, the die broke off from the constant pressure of striking coins. Any coin minted after it breaks off will look like that until they retire the die so it is not uncommon to find. Link to comment Share on other sites More sharing options...
Tridmn Posted July 18, 2019 Author Share Posted July 18, 2019 So I have just a good old bicentennial. Dont get me wrong. Gonna hang on to it by all means. I really like the reverse of those coins. Link to comment Share on other sites More sharing options...
