Barrel from GM # 5553i :
Barrel from GM # 53661 :
Barrel from gun offered by FGS :
Vern,
BTW...I have been taught that the odd "set-back" of the front sight on the barrel band is exactly what one wants to see on an A&F barrel.
These are thought by some to have been made in Switzerland by the Hammerli firm, has this set-back and even has a different lands/grooves pattern in the bore of the barrel.
My "comfort zone" for A&F Lugers is to see the "Made in Switzerland" stamping of a little larger font size as well and usually not on the same line/axis of the A&F stamping.