It was pretty cool. It had a shorter barrel (don't remember how long specifically), no finish with matching patina on both cylinders. He speculated that someone already had a conversion in .44 back in the day, and wanted a matching 1873, He had some original rounds of both 45 and 44 for it. Considering people did not readily get rid of things that worked well back then, it is not too far fetched a thought. It was impossible to say if the .44Colt cylinder was original, or if it was a minor caliber like .44 Russian bored through.
The .44 Colt round, after all, was a fairly decent round - especially the Frankford Armory .44 Martin load: 225 grain bullet and 30 grains of powder.