M.C. Lilley Sward

 You have a Knights Templar Sword--circa 1880-1901.  Valua varies from $200.00 to $500.00

Looks like a M1860 Staff Officer's Sword, though the face on the end of the quillon is something I haven't seen before, though I found pretty many pictures of them by www.picktorrent.com search. These became regulation for all officers other than Cavalry and mounted Artillery in 1872, and were replaced by the M1902 saber in, well, 1902. Yours has a nice etching job and looks to have nearly all of the gilding intact. Nice find. I think the inscription is "5th Regiment ONG" and not "OHG", which would mean the sword was presented to the Adjutant of the 5th Regiment, Ohio National Guard. They seem to have had a few troubles by 1897. The work is so exquisite. I can't take my eyes off the sword. Surprised that it is so cheap(

That is a fraternal organization sword, late 1880's to about 1910. Nothing to do with US Military. These sell at around $150-$300.