Hi Jim,
congratulation; You got a rather scarce Enfield version. It was made in Suhl, the main gun producing city in Germany by Spangenberg & Sauer. 1273 Suhl Enfields were delivered to the US Ordnance Departement in 1861 by Schuyler, Hartley & Graham, NY (Source: Firearms from Europe, Whisker/Hartzler/Yantz, 2nd edition, p.91; the gun is pictured on page 106)
I would appreciate if You could send photos to the forum or to my email address.
Best regards,
Marc