In the early 2000s, on the official Gibson forums, you can give your serial number to the moderator(or maybe that was the admin) and he can give some info on the guitar- model, color and where it was shipped.
Theres nothing wrong with the guitar. Its normal. Theres a reason why the ground is connected to the bridge and into the strings. Turn down the volume knob when you're not touching the strings or get a noise gate pedal.
Some 1987 ones including the one i owned had those pup routings.
Here's another '87 with that pup rout: