On my DS (H5xxxx) marked on the frame is a "J". It is located in front of the grip, to the rear of the triggerguard and below the cylinder release. Is this a frame designation? I thought DSs were "D" frames so I'm not sure what it is.
That and a single letter or number stamped usually below the serial on the frame under the crane are apparently assembler / inspector stamps. The actual character / number vary as no doubt did the assembler / inspector. /forums/images/graemlins/cool.gif