1949 Jefferson Nickel DDO

Looks like it to me but you can see some MD as well. Can really see notches in TRUST. Can you get clearer pics?

1. Note the area that you suspect is doubled? All are on the outside edges of the devices.
2. Machine Doubling leaves a flat, shelf like look. On some of your images, you can see the reflection because the devices were flattened.
3. Note the area you are looking at. All those areas were reduced by the Machine Doubling.
4. On a doubled die, you look at the centers to see the spread. Why do doubled dies show spread/doubling? Because had the doubling on the die. Thus the term: Doubled Die. Note on this example the spread?







Note on all of these examples.
1. This is showing spread in the center areas of the devices. Not are are exactly alike, but all of this is on the same coin.
2. Note the doubling/spread is on the central areas of the devices. Not on the outsides of the devices.
3.On this one you can see the spread line. This is not always the case, but the spread is seen as a widening different than the normal device sizes.











Machine Doubling is very common. It is not a die issue, but a machine issue. Even doubled dies can have Machine Doubling:

Note all 4 images are of the same doubled die. See the spread on the devices? Then note the yellow arrows? That was caused after the strike. Note that the doubled die follows the design? Machine Doubling is usually in a direction. All seen the same on the coin, in the same direction.

Well that is part of the design. But only seen on example in earlier die states. It was seen on the previous years more.

But the master hub must had been showing die wear? But out of the examples I looked at on PCGS, they were later die states and not seen as easily as on your coin. I looked up on V.V for a listing an they only had one listed for the 'S' mint.
http://www.varietyvista.com/04a%20J...9SDDO002.htm
But those devices are not listed on the description:


Note on these images, the areas you were looking at are also very weak on their example. But that is what is. Just part of the design.
1950 Proof Nickel:

You can see it a bit better on this one.

Earlier die state of the coins struck. I was looking for an image of a proof coin for 1949, but there were no proof coins that year. So I used a 1950. But check out PCGS 'Coinfacts Home', these images you can see how it shows on just a few, (only one on the site, even on the full steps) or the lighting at that angle was not showing it well. I knew this was a design issue, but had a harder time find images to help show it. But I would save your coin as it is a nicer die state coin.