1953-D Dime New DDO?!

Looks like a normal coin. The circulation wear has flattened the devices a bit. I don't see any evidence of hub doubling.

Three ways a coins devices can look larger than normal.
1. Circulation wear and contact can flatten devices and make them appear wider. But that has happened is that the tops of the tapered devices are worn down and now look wider than they were at first.
2. Struck Through Grease errors. When the dies get a small amount of grease or a large amount of grease into the die, then the usual tapered devices are reduced in height because of the Grease Fill. The larger bottom parts of the devices filled make the devices look wider, but their height gives them away.
3. Hub doubling can make the dies devices look enlarged be cause they are wider because of the die making process. The devices can vary according to how much spread the hubbing creates. That is they type of doubling that variety collectors like. They are the ones with a small or huge premium because of demand or few examples known. The minor doubled dies prices are lower because they are easier to find. A huge spread on a proof coin is rare because few examples are struck. Most proof coin only used to strike 3,000 coins. (6,000 strikes) So the have the fewest examples out there. I've seen some that ask 4-5 figures for these. The stronger the spread, the more desirable they are to collectors buying them.

That area looks like slight Machine Doubling. If you were able to look real close, you would probably see very small metal striation lines on that area. That happens when the metal dies slide a bit after the strike. They look somewhat like these: