The cent is pretty worn but if you observe the "4" in the date and the "9" is also apparent in the doubling but not as prominent. When I researched ddo for 1941, I found it is most common on the "In God We Trust" but the doubling on the date is a less commin known ddo error.
Ummm, kind of hard to tell from those pics. Can you get in closer? Usually you can use a magnifier or loupe in conjunction with your camera.
FS-101 (old FS-018) - Fairly strong doubling at LIBERTY, weaker doubling at TRUST, doubling of the 4 of the date, weak doubling at W of WE.* The weakness of the first hubbing is especially apparent on TRUST, especially in comparison to the next (FS-102) That came off the PSGcoinfacts website The Liberty isnt in good shape on the coin but the we and trust has doubling as well as south of the 4. There were 3 DDO varieties for 1941. Does that make a difference?
Your description is quite correct, but the doubling of the 4 they mean is that each image is the same thickness ( height), rather than one tall, and one flat like you are showing. That coin also has a very strong "B: in liberty. I am sorry, your example is one of machine doubling and not a doubled die. Some doubled dies do have uneven height, but there is a merging ( often called split serifs) on portion of the 2 images rather than being separate.Sometimes it is very difficult to tell the difference, so don't be disappointed. At times it happens to most. Jim
