an i get some info on this S&W 38 special Serial # V43XXX
This is a Military & Police model revolver made during WW II. The V (for Victory) prefix was introduced April 24, 1942 when the previous serial number range reached 999999.
Between April 24, 1942 and August 27, 1945 S&W made 811,119 Victory models. Yours was made fairly early in the series, most likely around mid-1942.
Revolvers made for Britain and other Commonwealth nations (e.g. India) were chambered for .38 S&W. Those for U.S. use were chambered for the .38 Special cartridge. Many were issued to security personnel guarding plants manufacturing war material.
Your revolver has the older style hammer block system. The design depended on spring pressure to return the hammer block to position. It was found that excessive dirt or grease could keep the hammer block from returning, so S&W introduced a new more positive system at s/n V769000. These are stamped with the prefix VS (occasionally SV), the "S" indicating the new safety system.
If older pistols such as yours are to be fired, the hammer block should first be checked for proper function. Personally even then I'd keep an empty chamber under the hammer.
Victory models have become quite collectible. Since a great many were made they aren't hard to find, but they can be hard to find in really good condition, say with 95% original finish.
Though they lacked the high polish and blued finish of commercial revolvers these were very well made. S&W quality did not deteriorate during the war years. The amazing number produced is just another example of the staggering production achievements of American industry during the war years.