I was hoping that some of the folks out there could provide me with some information on an electrician's pocket knife I purchased at an estate sale. I am new to collecting knives and my knowledge is limited. The knife in question seems to be an ordinary electrician's knife. The only markings on the blade are "OK". I don't believe this is no rare or valuable knife, still it's orgin and maker elude me. I'd appreicate any information that you can provide. Thanks!