Hello! I'm trying to find out what information I can about a Smith and Wesson pistol that has been in my family for quite a few years. It has serial number 905979 and WB(?) and the ordinance flaming bomb on the butt. A large P is stamped above the left grip. Checkered grips, no lanyard loop.United States Property on the top strap. 38 S&W Ctg on the barrel, although I know it is modified for 38 special. Along the left side of the barrel are 3 symbols that look like circles with a crown on top and 2 letters inside. The letters look like BV or RV. Preceding the symbols it says "not English make".The same characters are repeated once below the top strap between the cylinder and barrel. The finish is not blue . Thanks for any info you can give me!

Tom