By my modest opinion I would grade this to be a AU50. I know that the 1958 double is extremely rare, so I know a price would be hard to say. But I would also like to know if you think this is real or not. This is a video going over the date and mint mark, I apologize for the fuzzy parts and my lack of a steady hand. http://s161.photobucket.com/albums/t230/mike5302/?action=view¤t=1958d.flv
one last picture http://i161.photobucket.com/albums/t230/mike5302/1958doverall.jpg there is a slightly pulled back picture, showing more of the penny
Hi Mister Martin. Welcome to the forum. I think what you are referring to is a doubled die and not a doubled strike. They are two different things. The 1958 doubled die is rare and very valuable. But your coin is a 1958 D. Unfortunately, I think your coin is not a doubled die but is what is called strike doubling (a third different term). Strike doubling does not have value and can commonly be found on coins including current dates. It can be caused by a loose die.
Hi and Welcome to the forum! Machine doubling produces a flattened edge from a shearing action of the loose die as it strikes and ejects. Here is an url that explains and illustrates the "tricky" troublesome imitators. After a while the brain/eye will recognize 95% or so of these immediately. http://koinpro.tripod.com/Articles/OtherFormsOfDoubling.htm Jim
The difference between machine doubling and a doubled die is explained rather well in the back of Cherrypicker's Guide.
WELCOME TO THE FORUM Although yours is not a true double die, neither is the so called poor man's double die 1955 Lincoln Cent. However, even that lately has been selling for about $10 and up pending the grade, naturally. If you want some great explanations and examples of all types of doubling, try the www.coppercoins.com web site. Also, they have some fantastic experts on just Lincoln Cents there. Great educational.