Actually, over two grand
From a Seneca County, New York newspaper in December 1864:
Arrested for Forgery.
Lieut. H.C. Furniss, of Waterloo, is now under arrest at Elmira, charged with forging the name of Provost Marshal Knapp, of this district, to certificates of muster. These forged certificates to the amount of $2,200, were presented to, and paid, by the Supervisor of Fayette. Lieut. Furniss was arrested at the oil regions of Pennsylvania, and brought on to Elmira, where he will be tried by the military authorities.
I have not seen how the trial worked out. An undated clipping at the New York State Military Museum lauds Lieut. Furniss for his recruiting skills for the short-lived 11th New York Artillery Regiment:
11th Heavy Artillery.
We are pleased to learn that Lieut. H. C. Furniss is doing well in recruiting men. He has already recruited some sixteen men, and has been to work about three weeks. He is an industrious goahead young man, and has a good military education. He has passed an examination as to his capability for an officer, and gave good satisfaction. Young men could not do better than to call upon the Lieut. and see him before going abroad to enlist. This will be a fine regiment, and will not go out of the State. The Lieut. has an official notice that the regiment will be raised to garrison the forts in New York Harbor.—