1902 O VAM 23

That could be (probably is) Die Deterioration or possibly Machine Doubling. We have a member here who is as good with 1902-O as anyone around; I'll drop him a message and see if I can get him to have a look.

I agree with Dave, It is probably Die Deterioration or MD and not doubling.

I will not be able to add much. If indeed you have a V23, it does have the C4/C3 reverse. This means that a C3 die was re-hubbed with a C4 reverse hub. Even just a little bit of mis-alignment in the re-hubbing process creates a lot of reverse doubling. While this is interesting, the C4 reverse hub comes with it's own doubling (built in). So yes, C4/C3 reverses are well known for reverse doubling both from the "mother C4 hub", and from the re-hubbing process. This is one of the reasons why I studied the 1902-Os extensively. While mention of the reverse doubling can be found in many VAM descriptions (including the V23), they really don't help much with attribution since there are so many, and the doubling is extensive to begin with and mind numbing.

I don't want to start anything, but your coin does not have the signature die crack on the reverse of the V23.? Your coin does have either a crack or die scratch at the tops of ES of STATES, which the V23 doesn't have. There are a number of doubled ears in the 02-O SEries. You might want to look a bit longer.

By the way, if you would like help, give me a shot of the date placement, mint mark placement, olive berries, and tell me if Liberty's profile is doubled. A shot of the doubled ear would also help.

That is some great info. Thank you for sharing it.

Cracks can be progressive. Both my LDS and MDS examples have this crack at the left wing tip, and do not have the crack/scratch at ES of STATES like your coin has.

The VAM-42 is very similar to the VAM-23. Did you look at that one? Hope this helps.

It is a 42 thanks Vamsformoney