No camera here today, but same grind or clamping scar on the extractor on my 5,573,xxx and on a extra W marked Extractor in the parts cabinet.
Different (no mark/smoother) one on my 5,8.
Thx Scott,
All the original Type I WRA bands I've seen also have barely noticeable weld scars.
One Beautiful carbine !!
Enjoy....... I have,
Charlie-painter777