: unless there is genuine question as to authenticity of original or unfair to admit duplicate in lieu of original (e.g., only part of original is duplicated)
Evidence of original's content allowed if
- Original lost or destroyed
- Original unobtainable by judicial means
- Party against whom document to be offered was in possession, but did not produce the document
- document relates only to a collateral matter
: duplicates generally not admissible. Exceptions: duplicates of business records
accurately reproduced; and duplicates reproduced as image that cannot be altered without leaving record of such changes.