1970 S LMC DDO, DDR Low 7, Large Date Questions

Keep in mind that the 1968-1972 cents have a lot of Machine Doubling on them. Machine Doubling affects the outer edges of the devices.

On a DDO / DDR the spread on the centers of the devices. Not on the inside/outside edges of the devices.

A doubled die can Machine Doubling, but Machine Doubling never creates a doubled die.

So don't look at the outside edges of devices, look at the centers and compare it with a normal coin from the same year/mint to tell if they are normal or showing a doubled die.





So look at the centers of the devices for spread. Don't look at the outside edges, as that is where you can see die wear or Machine Doubling on the devices. Machine Doubling shows the contour of the devices being pushed aside on a the coin:

Note the 90 Degree angle on these devices. That is where the contour was removed and the devices were reduced in size. On a doubled die the devices will be enlarged, not reduced.

CoopHome: What is the difference between Machine Doubling and a doubled die? devices will be larger than normal. Machine Doubling reduces the size of of the devices. so don't look at the inside/outside edges of devices. die wear and Machine Doubling happen there