I recently inherited my late grandfather's U.S. Revolver Co. (by Iver Johnson) .32 Top Break Revolver, and (as you can see) a very old box of .32 Remington center fire cartridges. From what I can tell, my grandfather probably only shot the gun 10x himself (as only 10 rounds are missing from the box), and then he put it away (dirty) for several decades. I intend to clean it the best I can, and then have it inspected by a professional gun smith. Based on the forum posts I've read on this topic, I've included multiple photos of the piece; specifically any of the S/N that I could find. What I could not find was any reference to a "letter" before the serial number. Based on my old eyes the S/N appears to be "44903". I've found that located on the trigger guard, on the left grip frame, and under the top break. Of Note: on the right grip frame, you'll note the number "1"... I can't seem to find any information about why that's there, or what it references. My questions for the pros: 1. Is it possible to determine the Manufacture Year with the information I've provided? 2. Is this actually one of the Iver Johnson black powder frame models? I'm guessing it's manufactured early 1900's, and is actually a black powder frame (from one on the Iver Johnson surplus models)... but I just don't honestly know... Any insight would be greatly appreciated... Thanks in advance.