Rimfire,
What's with all the Spencer serial #s? Do you buy them all? Are you doing this for friends? I'm gonna have to charge you big bucks in the future
for serial # information
You asked about Spencer Rifle serial # 3004 - All I can tell you is the following, so you have to decide which unit works for your serial # request
My SRS Books show the following:
Spencer Rifle serial #3017 - issued to Company B, 9th Michigan Volunteer Cavalry on January 1, 1865 or
Spencer Rifle serial #2994 & serial # 3018 - issued to the 6th Independent Company, Ohio Volunteer Sharpshooters in 1863 (no day or month shown)
Hope this helps (only kidding on the above comments)
Two Flints