Maybe an odd question really dnt know so thought I would ask? I have a used sp 101 357 mag that I bought used earlier this year, shoots great never a problem but something about it has been nagging me. When I disassembled it for a compete cleaning I noticed a number 14 etched on the flat surface above where the trigger return spring is located ( I know I know, pic). This is not what I would consider a factory etching because of the sloppiness of the etching, very very much hand done, anyway my question. Is this normal, should it be there??? Did the previous owner install a heavier than normal spring??