Well, I went back to the store to see what kind of price they'd do on it. They budged a little and so I took a chance and brought it home.
From what little research I've done on it, it seems to be a New Model Army. The serial number puts it as a November 1864 production. It appears to be all matching with the serial number 107474 being on the bottom of the barrel, on the left grip frame, and on the trigger guard.
The barrel markings still have me stumped. The barrel marking is more commonly found on serial number ranges in to 10-20k range (at least according to Ware's book
Remington Army & Navy Revolvers 1861-1888 if I'm reading it correctly). Had the barrel serial number not matched the frame id suspect it's a rebarrel, but it appears the be original to the gun and the numbers don't look to be restamped. Of course I could be wrong and maybe that's exactly what this is. Still, I'd love a more expert opinion on it.
There are several inspector markings on it, mainly H but also one W. There is a faint cartouche on the left grip that looks like OWA for O.W. Ainsworth to me but might be a different letter combination.
There is a damaged section on the cylinder and one nipple missing, perhaps the result of an unintentional discharge? The remaining 5 nipples appears the be ok.
The cylinder arbor pin is broken and (for now) I can't get it removed with the use of thin needle nose pliers. When I have more time (and courage) I may try to take it apart to see how I can free the cylinder. If anyone has suggestion please make them!
Now, I likely wouldn't have bothered with this gun, but as I was able to get it for $450 out the door I think I didn't get burned too bad. What do you think (opinions truly welcomed)
Here are pics I took once I got it home this evening:
Barrel serial number 107474
Frame serial number 107474
Trigger guard serial number 7474
Barrel address more commonly found on 10-20k serial numbered revolvers (per Ware) and the biggest mystery/question for me anyway
Cartouche on left grip. OWA?
Inspector or assembly mark H on cylinder, barrel and trigger guard
Inspector or assembly mark W on frame
Cylinder damage/missng nipple
Broken cylinder arbor pin (suggestion on how to remove it???)
What the cylinder arbor pin
should look like