GS you are right on that, the coins was grade in batches and the “money men” where putting together series of coins and giving them numbers like the 1 of 150 series. It does not mean that there where only 150 of that coin but that there where 150 series grade of example 2 coins $1 and $5
So its not a number of how many coins there where of that type.
Is it fair that a coins 1 of 150 is more expensive than 1 of 1000 ? I am not sure but maybe is my best answer. Really it depense on two things.
1. Are you collecting coins with a high grade like the MS69 then the 1 of ?? does not make any sense except maybe the 1 of 1000 as it has MS69 coins in it.
or
2. Are you collecting different coins from the WTC and then maybe yes
it makes sense to collect different series of coins.
Does all this mean I would not like to own some of the series no I would love to just can't affort it .
GS hope it answered your question.