Welcome to the forum, and thanks for the good photos.
There's a contradiction regarding your example, as the lettering style shown is listed as used 1910-1911, but year of manufacture listed for sn 98956 is 1916 for both small frame .32 and large frame .38.
The U. S. Revolvers were Iver Johnson's economy brand, made for mail order sales.
Value maybe in $100-$150 range. The online auctions will get the most exposure but will require shipment to a licensed dealer. Sale to a local dealer or at a gun show will bring the lowest offers, but some may accept it on consignment.