I'm a customer of Providence Tool Co and unpaid employee (Vice president of lifting heavy objects) and got to talking to Frank (the owner) about making me a carbine. I have an original Peabody carbine that Frank converted to center fire by making a dedicated block, hammer and internals. It's a nice carbine but it has a few nitpicks. The 56 Spencer round is pretty accurate but I could only get just under 40 gr of powder. The trigger was pretty heavy and there was no provision for windage adjustment. 
On the high end rifles Frank makes an unbelievable amount of time is spent on fit and finish. I wanted a retro carbine that was obviously new but had the flavor of a nineteenth century firearm. So we came up with this proof of concept, prototype, whatever ,carbine. It was a fun project as we could experiment with sights, barrel length, finish, et cet. It's in 50/70 and was built with Wisconsin black bear hunting in mind. I like the 50/70 as you can always reduce loads for plinking. At just under seven pounds I would only use full power for hunting and when my brother in law wants to shoot.
It has double set triggers so no worries about heavy pull, and for the rear sight I wanted to use a trapdoor Model 1879 which is adjustable for windage. I got a real carbine rear sight online and went with that. The front sight is drifted for windage.
We tried a simulated aged metal finish on the barrel and brass buttplate. The wood had a temp modern finish which will be sanded off in the near future. I wanted something of a beater, well used wood finish and that will be worked on soon. 
I'm very happy how it turned out. It feels solid and simple as an axe handle. Monday it's going to the range to try it out.

Very nice, I like it!

My late father would have liked that one too, as he's the one who introduced me to single shots.

Old No7

I have an original carbine in 50/70 also that has absolutely no markings on it at all just a serial no. It is in need of some wood but I can't find anyone who can help me. It seems the Providence Co. wood I have been told will not fit. I found a butt plate for it from another poster. The barrel is very poor but shootable. I was going to fit a barrel and chamber it in 40/50 SBN if I can find a stock. Any ideas? By the way yours looks great. What barrel and twist do you have?

JMH

Barrel is 1/26" and 20" long. From the few times that it's been shot it does favor heavier bullets. Got about 2" groups at 50 yards. Recoil is surprisingly light probably due to short barrel. Only shooting black powder in this carbine. It does produce an impressive fireball with full loads.

Mine is identical to yours as far as looks go. Yours doesn't look like it has any markings either. Can't see the side very clearly.


JMH

All good rifles (and carbines) need to be used.  Admittedly, 56-50 RF ammunition is hard to find, but conversion to CF is pretty straight foreward.

I think there are some markings on mine.  Have to dig it out and see.  Mine came out of NE New Mexico where all the land grant wars were in the 1870's.  The family name of the fellow I got it from owns a very large ranch north of Mora which makes it interesting.   

George

George and mm1ut1, my peabody carbine is a spittin image of yours. Thanks for posting the pics. Frank