Re: US Revolver Co.
I have one of these US Revolver Co. .32 S&W's (mine is the hammerless version). I actually do fire mine (but I have gone through it completely, cleaned and oiled everything well so it is safe to fire). The serial no. on mine is 45xxx and mine was made in 1930 or so. With your serial number, you are a little later manufacture than mine is - about 1 year later - provided yours is hammerless. These later models were NOT black powder models. They were designed to fire the smokeless .32 S&W centerfire cartridge. Ammo is a bit hard to come by, but it can be found.
The earlier version that was not hammerless began production earlier so serial numbers were higher by 1916 than the hammerless versions were by 1930. Those earlier pistols were black powder cartridge pistols for the most part and are NOT designed for smokeless cartridges.
The hammerless variety was called the 'safety hammerless'. There is no actual safety on the pistol of any kind, however, they were designed with a trigger pull that damn near needs an elephant to pull the trigger (OK - not that bad), but they are double action only utilizing a leaf spring inside to trigger the firing pin. I have mine measured at requiring approx. 12 lbs. of trigger pull to fire it. That very heavy trigger pull IS the safety.
Do NOT fire the pistol with anything before you find out for sure whether it was made for black powder or smokeless cartridges AND you have it checked by a qualified gunsmith if you are not qualified to do the checking yourself. Firing smokeless cartridges in an old black powder pistol could very well have pieces of it flying into your face. Firing old black powder cartridges in the newer smokeless cartridge pistols just means you get to do some extra cleaning (sometimes from your clothes also).
If you want to know what it may be worth, post the same question also asking what it is worth, into the 'ask the pros what it's worth' topic. I can tell you that in general they are worth in the $50-100 range in decent condition. I only paid $38 for mine this year (plus the shipping). Most important is that you post pictures of it to that topic so the guys who answer you can see the condition. The condition of the bore is also very important - if the bore is a mess then it probably can never be fired without replacement.
Last edited by WHSmithIV; 10-28-2012 at 12:16 AM..