I Have Imported Well Over 100 Razors from the USA..I Have Been Caught with Custom Charges about 8 Times in that Figure or Less..They are All USA Versions..Schick Razors were Not Aimed at Europe at that Time & Were Normally Brought in By Individual High End Barbers or Retailers in London or Say Paris or Somewhere..
Loading One Blade into a Magazine is Quite Illogical as its a Complex Long Road..Also..Loading One Blade in the Mag Can Seriously Jam it Up..The Blade is Thinner & Can Get Hung Up Solid..The Blades Often Will Not Feed through the Exit Slot..Like Putting the Wrong Coin in a Slot Machine..
As I Said..You Can Get it Away it for a Moment..Then Bang..Jam..Razor Jammed..Another thing..Many of the Original Magazines are Damaged..Most of Em..They were Disposable..The Magazine & Blades Came Factory Pre Loaded..These Razors were Never Meant to be Opened & Closed at Random..They are Not Tinker Proof & Most Folks Tinker with Em & Muck Em Up..These Razors are Also Very Old..Exceptional Design..Its a Wonder they Survive Intact at All..Thats Why NOS Ones Fetch High Prices..
But..Hey..Feel Free to Tinker..Its You're Razor..
Billy