Is this a Beaumont-Adams or a Deane and Adams Revolver? And a few other questions

[LzChase]

I only know 3 things. It is an Adams Patent type revolver, It is the first percussion revolver I've bought and it is quite beautiful despite it's heavy wear.

....That being said I am no expert, I know not if it is a Beaumont-Adams or a Deane and Adams variant, neither do I know exactly when it was made?
The ramrod is missing for some reason. It only works in double action. I don't know if this is normal or not for this particular revolver. I think it is a 38 bore version as a .45 is way too small. What is it plated with? Nickel? Silver?

 

[LzChase]

EDIT: The revolver was once listed on Bukowskis. Here it looks slightly different. At this point in time it has it's cylinder pin bolt and a strange hammer. Interesting.
https://www.bukowskis.com/sv/lots/458021-revolver-adams-1800-talets-mitt

 

[user 48679]

IIRC, the spurred hammer makes it a Beaumont Adams improvement, as the earlier Deane-Adams AFAIK didn't have the hammer spur.

 

[user 33882]

The standard Adams is double action only and usually doesn't have a spur on the hammer. The Beaumont-Adams is single/double action and has a spur on the hammer. A Beaumont-Adams will generally have an Adams patent use number on the right side of the frame and a Beaumont patent use number on the side of the cylinder, but that isn't always the case.