Nice Find Marcus! I was at a car show once and saw a 113 with one square and one round tip. He and everybody else at the show knew nothing about it. It caught my eye having never see a square one in person. It has been so long since the rounded tips have been produced, most have no clue. Anybody know when and why they switched ends? I figure it was due to reducing manufacturing cost. Not exactly sure how the end is formed, but the rounded version has to be easier and less costly.