I tried to confirm your attribution but I can't from the pictures you supplied. If you want, post pictures like those supplied by Wexler or Coppercoins for the various markers that they discuss. We can have a look at them and let you know. A coin in this fine of a condition would merit confirmation.
i'm so new at this i dont know what a 1DO-001 is but i believe this is my first small date i've found. pulled from a CRH last week.