how easy is it to tamper with uncirculated mint set's in the plastic ?

i bought 5 1971 p&D uncirculated mint set and going through them i noticed that i was seeing error's in the nickels of the P's. on th R of the coin and it's all on the main door of Monticello looks doubled but then i got in to the D's and i have 1 that is that same as the P's and i then looked at the mint mark and there is no D on the nickel in the mint cello this one is the no D

this on is in the blue cello i have 3 of them cr

 

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all 5 P's have the same error plus the one in the D mint cello with no D

 

Looks like bad marks.
And it's Mint Sets, not Mint Set's, unless something belongs to the Mint Set.

 

look at the door frame, not the damage the right side inner door is doubled

 

Looks like you have some normal, run-of-the-mill unc mint sets from what I can gather from your pics. Your decription isnt exactly coherent. I wouldn't lose sleep over these coins if I were you.

 

ok now it's not about damage i can see that it's about the nickel in the Denver mint set that has no D mint mark and it's about the 5 pilli mint set's < o get it < that have close to the same error as the No D DENVER
now the NO D mint set pic

and i didn;t know this was gramer schole

 

and yes ti loosk like a mark to you seeign it is way diffrent

 

@Even what don't u get from my post i am asking is it possible to tamper with mint sets. i have 5 pilli mint set with the same R error and another Denver mint set that has NO MINT MARK D on it. with the same error as the 5 piili's, plz look at the first pic and zoom in you can see that the cello is redlined and that all the other coin's in the cello has the D mint mark on it except the nickel the package does not appear to be tampered with but this is my first uncirculated mint set
and yes i know they look like run-of-the-mill unc mint sets ITs the nickel with NO D in a mint set that should have all D coin's in it

 

i found out that it's packing error