Bought what I thought was a 1993 P90 loaded LP Special about a year ago. While trolling the Forum a few months later it became apparent that the P90s were really P100s. I pulled the neck pup out and sure enough, a P100. Markings in the cavity indicated a 1993 date. Put the pup back in, re-strung her, and got on with life.
Flash forward to last week. I bought a set of SD P90s (Vintage SP90-1 in the neck and Hot Soapbar SP90-2 in the bridge). When I pulled out the bridge pup I found "LP JR SPC" marked in the cavity. Photo below.
So...what is the difference between an LP Special and an LP Junior Special? Is it the P100s?
A few more photos.
Before pup change
After pup change (shop only had a cream cover for the bridge P90 - figured I just use the P100 cover - however, that cover is just a bit too tall - left the cream cover for the time being - "Zebra P90s" - kinda' growing on me...). BTW - sounds friggin' awesome!
Back to the Special vs Junior Special question. In the photo just above, notice that the cutaway side does not fair into the neck (see area around 17th fret - body is visible on both sides of the neck). However, on some of the "Specials" I have seen, the cutaway fairs into the neck. See photo (randomly copied from internet) below (body fairs into neck at about the 19th fret).