The first tablet, with those kinds of markings, makes me suspicious that it may be X. Without some kinds of identifying numbers or letters, there is no way to say for sure what it is, without having it lab tested. All prescription meds in the US are required to have identifiers on them.
Endo602 is
Endocet, 325mgs
Acetaminophen, and 5mgs
Oxycodone for pain.
The other one, I suspect is actually a V with the 3601, this is a generic Anexsia tablet for pain, 325mgs Acetaminophen and 10mgs
Hydrocodone.
verwon@gmail.com
My information is not guaranteed correct. I do not get them right all the time, but I do enjoy the hunt~