NBD: 1987 Fender jazz bass (also... what are these things?)

[polvo]

Just picked up this beauty, a 1987 reissue of a JB-62.

 

I'm partly just posting here to show off, of course, but also because it has a couple of weird features I haven't seen before and I'm curious if anyone knows what they are. 

First, the metal strip running from bridge pickup to bridge (that line is not painted, it's literally a piece of metal embedded in the body). And second the two small holes either side of the neck pickup. See the third photo for closeups.

 

 

 

[Pea Turgh]

Holes by the pick-up are for a cover, metal strip is how they used to do the earth (would also have been covered).

Edited 14 hours ago by Pea Turgh
Pic added

[polvo]

Ah ok makes sense, thanks