Richard,
Are you joining my Spencer Shooting Society? If you are I will need your Email address, just shoot me an Email at fsgrand2@fairpoint.net that you want to join.
Regarding your Spencer Carbine serial # 26752. I found two Spencer serial #s close to yours.
26760 - a Spencer Carbine issued to Company B, 4th Kentucky Mounted Infantry on March 13, 1865
and
26762 - a Spencer Carbine issued to Company L, 2nd New York Volunteer Cavalry in March of 1865
Hope this helps.
Two Flints