Morgan VAM help I: 1881-S and 1884-O

Before I get to the images, I need to start with a little story.
Well, my neighbor came over today with 200 wonderful circulated Morgan dollars which he had accumulated during his childhood. As my neighbor tells it, he had a paper route from 1961-1964 which paid $0.95 per hour-and-a-half route. He was just getting interested in coin collecting at this time, and thought it would be a great idea to go to the bank and pick up a Morgan or Peace dollar after every week. So, my neighbor (as a child) went to the bank once a week for 3-4 years picking up one of these silver dollars each trip. My neighbor always tried to get the best looking coin on each trip, but not necessarily the rarest date or mintmark; this proved evident after what we looked at today!
So, my neighbor called me up, asked if I would look at these for him and see if there was anything unusual or rare with the coins. I said it would be great to see these coins.
It took us about 4 hours to get through the batch of coins, carefully looking at each coin for strange errors or unusual anomolies. As I said previous, my neighbor tried to get the best looking coin after each week. This was clearly evident by the coins I looked at. I would put the average grade for all 200 Morgans at EF-40 or EF-45, with many nice mid AU coins and only a couple of low grade VG coins. Unfortunately all of these silver dollars were common dates, but still it was fun to look at each.
So, after looking at each one carefully, I pulled about 10 out that had errors or unusual aspects on them.
Here are two that I need your help with:
The first is an 1881-S with a doubled mintmark. I was wondering if this is a rare VAM or not.
(If you can't help me with just the doubled mintmark, just tell me what else I need to photograph and I will get that done)

The second is an 1884-O with slightly doubled tail feathers and a large mintmark over a small mintmark.
(again, if more details need to be known, let me know and I will photograph those areas)

Well, my neighbor came over today with 200 wonderful circulated Morgan dollars which he had accumulated during his childhood. As my neighbor tells it, he had a paper route from 1961-1964 which paid $0.95 per hour-and-a-half route. He was just getting interested in coin collecting at this time, and thought it would be a great idea to go to the bank and pick up a Morgan or Peace dollar after every week. So, my neighbor (as a child) went to the bank once a week for 3-4 years picking up one of these silver dollars each trip. My neighbor always tried to get the best looking coin on each trip, but not necessarily the rarest date or mintmark; this proved evident after what we looked at today!
So, my neighbor called me up, asked if I would look at these for him and see if there was anything unusual or rare with the coins. I said it would be great to see these coins.
It took us about 4 hours to get through the batch of coins, carefully looking at each coin for strange errors or unusual anomolies. As I said previous, my neighbor tried to get the best looking coin after each week. This was clearly evident by the coins I looked at. I would put the average grade for all 200 Morgans at EF-40 or EF-45, with many nice mid AU coins and only a couple of low grade VG coins. Unfortunately all of these silver dollars were common dates, but still it was fun to look at each.
So, after looking at each one carefully, I pulled about 10 out that had errors or unusual aspects on them.
Here are two that I need your help with:
The first is an 1881-S with a doubled mintmark. I was wondering if this is a rare VAM or not.
(If you can't help me with just the doubled mintmark, just tell me what else I need to photograph and I will get that done)

The second is an 1884-O with slightly doubled tail feathers and a large mintmark over a small mintmark.
(again, if more details need to be known, let me know and I will photograph those areas)


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Comments
Even if these aren't VAM's, please tell me.