American Guardian 11mm Pinfire Revolver

A very large 11mm pinfire revolver, of the 'American Guardian' type (faintly inscribed on the cylinder). 
The revolver is double action (trigger pull) only, the cylinder indexes, and trigger returns as it should. The sprung loading gate works - trigger guard and ejector rod look to be modern replacements. 
A good display piece, which could be cleaned up well with a little effort.