Original sentence: A cased commemorative copy of the Murphy Combat knife, with an etched blade, was issued by John Ek knives out of Richmond, Virginia in the early 1990's but due to the etching is distinguishable from the originals
Edited sentence: A cased commemorative copy of the Murphy Combat knife, with an etched blade, was issued by John Ek knives out of Richmond, Virginia in the early 1990s but due to the etching is distinguishable from the originals