
Gene,,,,
The only person that can give any given
VAM an A or B and such is Leroy Van Allen. As too running progression you have to keep in mind that a given
VAM Set, lets say Vam-6 and then Vam-6a and then Vam-6c and then Vam-6d may not run in progression as an A,B,C and then D. This type of listing is based on discovery "Not" by progression.
The 1880 O
VAM 6 type is a great example of this. The Vam-6 and 6a are one die pair, the Vam-6d comes next and then the Vam6c share the same obverse die but have a different reverse die. It also gets mucked up with the Vam-49 use of the obverse die used in all of the Vam-6 types and then we also have the used of the Vam-6c smashed up Reverse die used in I think the Vam-11a or something...I cant remember off hand.
As far as the 1880 O
VAM 6 types we have 3 different shared die pairs using the same Obverse die. They are the Vam-6 die pair 1, Vam-6a again die pair 1 "clashed with letter transfer"
We now have a die swap where the reverse die was changed out giving us the Vam-6d "same obverse die as the Vam-6 and 6a" different reverse die. NOTE this die pair the reverse die has "NO" clashing "BUT" the Obverse has a very light wing clash off the neck that can be seen in the pre-polished die state in the Vam-6a Die pair 1 "with letter transfer"
SOMEWHERE in between Vam-6a die pair 1 and the Vam-6d the "dies where swapped out again" Giving us the famous Vam-49 This die pair shares the same Obverse die as all Vam-6 types and has a light single clashed obverse die. This lets us know that it was paired between the Vam-6a and the Vam-6d.
For some reason the same reverse die was again paired up with the Vam-6d and the dies clashed about 3 more times making it a very well clashed obverse and reverse die pair. It is at this point the Obverse die was Retired ..."BUT the Reverse die was next used on the 1880 O Vam-11a. I saw one of the Vam-11a coins in PCGS plastic in MS-63 that was not clashed on the Obverse...it was way cool but over priced by about 200% so it did not come home with me.
Sorry for being long winded, my main point was and is that rarity and progression is not always right by the listings. Vamming is a work in progress much like the striking of a coin. We just have a lot of die life left before everything is known.
Russ