1909-P VDB 1-DO-002 Questions

i recently posted a comment, to a thread asking for grade opinions about his 09 VDB 1DO-002. I didn't contribute a grade opinion, but I commented that two of the die characteristics of the DD, were not visible (to me). the original poster pointed out that the identifiers were the die breaks in liberty.

earlier I posted my 09 VDN 1DO-002, and some people questioned whether it was in fact the 1DO-002, even though all of the die markers were present and matching.

my question is - does the presence of the die breaks in liberty - only, establish that it is the DD.

i would think that a coin, in late enough die state, would also have the other die markers as well.

i am not questioning, whether or not that other coin is - or is not the DD, but rather, am I miss understanding how to identify this specific doubled die.

also along the way someone posted a link to a site which gave more clear, precise images - whith more die state information about thes DD. can anyone help me to locate that site again.

thanks