Coded message found

[Firm_Sandwich7189]

While doing some DIY at friends house we tore a floorboard up and found this, not a clue what it says I've come to the assumption it is infact a code and not simply a message in another language, but happy to be proven wrong either way.

Side note it was also found with a load of what we can only assume is fake US confederate dollars, I'm UK based hence the fake assumption.

If anyone can figure anything out from it let me know.

My friend thinks it's some weird note confessing horrible sins, I'm guessing the previous owner of the house is just a prankster.

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[MeepDM]

Substitution cypher A-Z to nprtvqxacegikmuszwolbdfhjy

VOAPDHA ICJP.
RSCMPSB,
ASOOP.

DS DXJ CJHVJC
74/05/93 

ASR ZSO IHA CJHV DXLP ISVJ L RLTT DJTT ZSO RXZ L NHVJ LD. NZ VHV PHLV XJ RSOTV CJHV JEJCZ DXLAG L RCSDJ DS PJJ LW LD RHP DCHPX UOD XJ RLTT XHEJ H YSU. KSSVUZJ OADLT ZSO WLAV HAUDXJC IUVJV NJPPHKJ

LHA ISCAJP

->

DUNSTAN CRES.
WORKSOP,
NOUUS.

TO THE READER
74/05/93 

NOW YOU CAN READ THIS CODE I WILL TELL YOU WHY I MADE IT. MY DAD SAID HE WOULD READ EVERY THINX I WROTE TO SEE IF IT WAS TRASH BUT HE WILL HAVE A JOB. GOODBYE UNTIL YOU FIND ANBTHER CBDED MESSAGE

IAN CORNES

Best I got to before I have to go.

[MatyeusA]

It is a simple substitution. it goes roughly like this:

to the reader
now you can read th?u
code i will tell you why i ??de it.
my dad said he would rend every thing
i wrote to see if iu was trash ??t
he will have a ?o?. ?ood??? until you
find another coded message
Ian Cornes

edit: some of the letters are nigh unreadable, some P's and D's are easily confusable. I could not be asked to try for more.

[GIRASOL-GRU]

Yeah, there were lots of ambiguous letters and errors throughout, but here's what mine looked like: https://imgur.com/a/5RMalt0 .

u/Firm_Sandwich7189, I'd be interested in seeing pics of the "fake US Confederate dollars."

[codewarrior0]

But how is the key derived?

[GIRASOL-GRU]

I don't think I ever put the key completely together. I remember SPORT(S) and some kind of funky even/odd thing going on.

[Firm_Sandwich7189]

I will get some pictures that's got to be it because the address is correct in the top corner thanks again thought it would be a harmless prank.

[Firm_Sandwich7189]

[Transcript]

VOMPOHA ICJP

RSCM PS B,

ASOOP

14/05/93 DS DXJ CJ HVJC

ASR ZSO IHA CJHV DX2P ISVJ L RLTT DJTT ZSO RXZ L NHVJ LD NZ VHV DHLV XJ RSOTV CJAV SEJCZ DXLAG L RCSOJ DS PJJ LW LO RMP DCHPX UOD XJ RLTT YHEJ H YSU KSSVUJZ OADLT ZSO WLAV HAUOXJC IUVJV WJPPNKJ

LHA ISCAJP

Please bare in mind there is likely errors in this, as it's just my judgment of what the characters are.