I recently purchased an old Marlin Blades box which was accompanied by numerous used blades. As I sorted through them I noticed that the center punches were different. Was the punch out changed through the years due to changes in the razors or was this an engineering change? I have three different versions for the Marlin Blades. The fourth blade is to show the different font style used on "High Speed".
View attachment 125353
View attachment 125353