Hi, everyone. I bought this Parker Jotter "Pardner" set at a flea market today. I'm not familiar with this set, but the clips do not have any lines or details in the arrow feathers. When I Googled the Parker Jotter Pardner set, the examples I saw seem to have feather details like other Jotters of the time (I'm guessing 1960's--domed button and brass threads). So, is this set typical for when it was made or unusual? Thanks!