Cool RCS.
I'm getting it's younger baby brother… G840
It is possible the wire was removed from yours to replace a broken fore-end or worn out draws. Who knows.
I understand the feeling for some (not you but some) about restoring or installing new hardware on some old rifles but i feel that since i cannot prove the wire on mine was remove in service but probably after i feel i'm not doing any more harm.
I think that if i do a nice job it should look authentic enough for me.
I'm more of a collector than a shooter too… so i can see how the wire could be troublesome for some people.