And I'll confirm what Jim and Joab said.... Except...
A Smith & Wesson top-break was never a POS. They were fine revolvers that exhibited much finer workmanship then you see in any revolver today. They were accurate enough to beat European top-quality single shot pistols in 50 yard target matches - something no other brand of revolver could consistantly do.
I also noticed the very short barrel, and presume it was cut down from a longer length. But if it wasn't, somebody ruined a very valuable collectors' item.