Civil War Remington

[ronfish]

Trying to track down the date (or as close as possible) for my Remington 1858 New Model Army Percussion revolver. The serial # 0n BBL and Frame is 40702. Standard Markings on barrel Patented Sept 14, 1858/E Remington & Sons Lion New York, USA New Model.
Any help pinning down the year of manufacture or other info would be greatly appreciated.
thanks

[Synchronizor]

Moved to Other Firearms.

I'm not really up on these revolvers, but if you haven't yet, try asking over on the Remington Society forums.