So, in today's little surprise package came this loose movement. It is time and strike with a single spring, also crown wheel and verge escapement driving a later balance wheel. It has residual evidence of having had a pendulum rather than the balance wheel, see the shot of the backplate. Does anybody have anything like this? It is well built. The balance wheel is not as well-executed as is the rest of the movement. It's wheel and pinion work is well executed as are the associated parts. It does not look American in origin, or if it is, it is quite unlike what we normally see. It has a later dial, no name on it, but well-executed, just really a brass ring with Roman numerals on it. Thoughts please?