M1903 ROD rear sight question

[Randy A]

Although very similar, the rear sight you have pictured is not from a Rod bayonet 1903, sorry for the bad news. The staff is almost identical but what eliminates the possibility is the base. The elevation ramp was a machined part of the fixed rear sight base on early Rod bayonet 1903s. I've seen many of the ones you have before, just can't remember off the top of my head what they were on.