Hi abqblue,
I have added your name to our membership list. Thanks for joining SSS
I checked on your Spencer serial #. Your Spencer Rifle, serial # 2850, WAS MOST PROBABLY issued to the 5th Independent Company of the Ohio Volunteer Sharpshooters on August 16, 1863.
Please take the time to post photos of your Spencer Rifle, or if need be, send them to me and I will post them for you.
Two Flints