Thanks for the add and Welcome! I could use some help with a serial number on a .38 Special. The serial # is 558136, no letters. The revolver is labeled Smith & Wesson on the left side of the tapered 4" barrel, and 38 S & W ctg on the right side. The left side has the Smith & Wesson trade mar under the cylinder release, and he right side is marked Made In USA. Any help is Greatly appreciated. Thanks in advance!