The only thing I can see 7 of are rivets. I'll go out on a limb and assume that there are circuit traces on the flip side of the board (that I've never seen) which will have the ground. The 19s are point to point wired with the attachments at actual lugs. There are pictures on this site of the 19 Xover.
The 470uF cap is for the protection circuit and is probably OK.