Thank you for the information. Looking at it a bit more carefully last night I noticed a couple things. The side plate is inletted almost flush with the stock, much deeper than it would have been originally. I think this might have been done because the lock bolt is stripped at the very end. Inletting the plate deeper might have been a way of using some of the remaining threads.
The lock bolt is also interesting. Probably not easy to see in the pictures, but the upper portion is more square and was forged down to a rounded profile where it is threaded, threads look swaged. The buttcap is poorly inletted in places, though not all over. The screw is an obvious replacement and I feel someone has probably worked this a bit deeper for whatever reason. Other inletting for the barrel and tang is very well done as is the inletting for the lock internals. The edges of the lock mortise is rough, but this may be due to improper removal over the years.
The triggerguard is also an interesting profile and was either made for someone with much smaller hands than me, or was never designed to be used with more than the tip of your finger. It is I guess very low profile and that might have been the intent. Unfortunately there are no markings of any kind. Perhaps there is something on the underside of the barrel, eventually I will look.
One question I do have regarding the lock, were many early locks made without bridles? I thought with this one due to the small size it might just have been left off with the sear and spring screwed directly to the plate.
