There are two different guitars, both referred to as RR7. One was intended for export (the "US type") and one for domestic sale (the "Japanese type").
The made-for-export (US) model has an alder body, maple neck, rosewood fretboard with dot inlays, a single Dimarzio humbucker, 22 frets and a fixed bridge with string-through-body design. It has a tone (nearest the output jack) and volume (nearest the pickup) control and a mini switch, and a 628 mm scale.
'RR', incidentally, stands for 'Rock and Roll'.
The difference with the RR6 is that the RR7 models both have tremolos, and 648 mm scale lengths.
For different promo pictures from the US and Japan, check out the "Adverts" section.
It used to sell for $650 (60,000 Yen).
Heartfield part number: 031-0900.
Heartfield colour codes available for the US guitars: Frost White (755), Montego Black (767), Frost Red (777) and Electric Blue (787).
First documented month of manufacture: October 1990 (serial number J90037, not pictured on the site). Last documented month of manufacture: October 1990 (serial number J90318, not pictured on this site). It never appeared in Fender Frontline magazine, and has so far only been spotted in a 1990 Japanese Heartfield Catalogue.
No pictures yet...